v3.22.4
Retirement Benefits - Fair Value of Plan Assets (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan Percent Of Employer And Related Party Securities Included In Plan Assets Maximum 1.00%    
U.S. Plans | Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Expected long-term rate of return on assets 6.25%    
Defined Benefit Plan Fair Value Of Plan Assets Dividends And Interest Receivable $ 268,000,000 $ 310,000,000  
Defined Benefit Plan, Plan Assets, Amount 32,922,000,000 45,909,000,000 $ 48,355,000,000
U.S. Plans | Pension Plan | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 6,131,000,000 9,804,000,000  
U.S. Plans | Pension Plan | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 20,476,000,000 29,396,000,000  
U.S. Plans | Pension Plan | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 9,000,000 20,000,000  
U.S. Plans | Pension Plan | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 6,306,000,000 6,689,000,000  
U.S. Plans | Pension Plan | Equity      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 697,000,000 2,172,000,000  
U.S. Plans | Pension Plan | Equity | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 681,000,000 2,136,000,000  
U.S. Plans | Pension Plan | Equity | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 8,000,000 28,000,000  
U.S. Plans | Pension Plan | Equity | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 8,000,000 8,000,000  
U.S. Plans | Pension Plan | Equity | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | U.S. companies      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 414,000,000 1,416,000,000  
U.S. Plans | Pension Plan | U.S. companies | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 412,000,000 1,396,000,000  
U.S. Plans | Pension Plan | U.S. companies | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 2,000,000 20,000,000  
U.S. Plans | Pension Plan | U.S. companies | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | U.S. companies | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | International companies      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 283,000,000 756,000,000  
U.S. Plans | Pension Plan | International companies | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 269,000,000 740,000,000  
U.S. Plans | Pension Plan | International companies | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 6,000,000 8,000,000  
U.S. Plans | Pension Plan | International companies | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 8,000,000 8,000,000  
U.S. Plans | Pension Plan | International companies | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Fixed Income      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 27,847,000,000 39,041,000,000  
U.S. Plans | Pension Plan | Fixed Income | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 7,378,000,000 9,661,000,000  
U.S. Plans | Pension Plan | Fixed Income | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 20,468,000,000 29,368,000,000  
U.S. Plans | Pension Plan | Fixed Income | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,000,000 12,000,000  
U.S. Plans | Pension Plan | Fixed Income | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | U.S. government      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 8,889,000,000 11,347,000,000  
U.S. Plans | Pension Plan | U.S. government | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 7,380,000,000 9,660,000,000  
U.S. Plans | Pension Plan | U.S. government | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,509,000,000 1,687,000,000  
U.S. Plans | Pension Plan | U.S. government | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | U.S. government | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Non-U.S. government      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 640,000,000 1,242,000,000  
U.S. Plans | Pension Plan | Non-U.S. government | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Non-U.S. government | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 640,000,000 1,230,000,000  
U.S. Plans | Pension Plan | Non-U.S. government | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 12,000,000  
U.S. Plans | Pension Plan | Non-U.S. government | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 17,775,000,000 25,842,000,000  
U.S. Plans | Pension Plan | Corporate bonds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Corporate bonds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 17,774,000,000 25,842,000,000  
U.S. Plans | Pension Plan | Corporate bonds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,000,000 0  
U.S. Plans | Pension Plan | Corporate bonds | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Mortgage/other asset-backed      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 422,000,000 464,000,000  
U.S. Plans | Pension Plan | Mortgage/other asset-backed | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Mortgage/other asset-backed | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 422,000,000 464,000,000  
U.S. Plans | Pension Plan | Mortgage/other asset-backed | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Mortgage/other asset-backed | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Commingled funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 104,000,000 164,000,000  
U.S. Plans | Pension Plan | Commingled funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Commingled funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 104,000,000 164,000,000  
U.S. Plans | Pension Plan | Commingled funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Commingled funds | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Fixed Income Funds Net Derivative Financial Instruments      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 17,000,000 (18,000,000)  
U.S. Plans | Pension Plan | Fixed Income Funds Net Derivative Financial Instruments | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount (2,000,000) 1,000,000  
U.S. Plans | Pension Plan | Fixed Income Funds Net Derivative Financial Instruments | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 19,000,000 (19,000,000)  
U.S. Plans | Pension Plan | Fixed Income Funds Net Derivative Financial Instruments | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Fixed Income Funds Net Derivative Financial Instruments | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Alternatives      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 6,306,000,000 6,690,000,000  
U.S. Plans | Pension Plan | Alternatives | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 1,000,000  
U.S. Plans | Pension Plan | Alternatives | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Alternatives | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Alternatives | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 6,306,000,000 6,689,000,000  
U.S. Plans | Pension Plan | Hedge funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 3,342,000,000 3,390,000,000  
U.S. Plans | Pension Plan | Hedge funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Hedge funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Hedge funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Hedge funds | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 3,342,000,000 3,390,000,000  
U.S. Plans | Pension Plan | Private equity      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,411,000,000 1,977,000,000  
U.S. Plans | Pension Plan | Private equity | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 1,000,000  
U.S. Plans | Pension Plan | Private equity | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Private equity | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Private equity | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,411,000,000 1,976,000,000  
U.S. Plans | Pension Plan | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,553,000,000 1,323,000,000  
U.S. Plans | Pension Plan | Real estate | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Real estate | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Real estate | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Real estate | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,553,000,000 1,323,000,000  
U.S. Plans | Pension Plan | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount (1,135,000,000) (1,220,000,000)  
U.S. Plans | Pension Plan | Cash and cash equivalents | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount (1,135,000,000) (1,220,000,000)  
U.S. Plans | Pension Plan | Cash and cash equivalents | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Cash and cash equivalents | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Cash and cash equivalents | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Other      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount (793,000,000) (774,000,000)  
U.S. Plans | Pension Plan | Other | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount (793,000,000) (774,000,000)  
U.S. Plans | Pension Plan | Other | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Other | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Other | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
U.S. Plans | Pension Plan | Repurchase Agreements | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount $ 2,600,000,000 2,900,000,000  
Non-U.S. Plans | Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Expected long-term rate of return on assets 4.13%    
Defined Benefit Plan Fair Value Of Plan Assets Dividends And Interest Receivable $ 74,000,000 96,000,000  
Defined Benefit Plan, Plan Assets, Amount 21,344,000,000 33,085,000,000 $ 33,820,000,000
Non-U.S. Plans | Pension Plan | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 780,000,000 797,000,000  
Non-U.S. Plans | Pension Plan | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 14,757,000,000 23,905,000,000  
Non-U.S. Plans | Pension Plan | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 3,809,000,000 6,020,000,000  
Non-U.S. Plans | Pension Plan | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,998,000,000 2,363,000,000  
Non-U.S. Plans | Pension Plan | Equity      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 2,461,000,000 3,223,000,000  
Non-U.S. Plans | Pension Plan | Equity | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 2,415,000,000 3,116,000,000  
Non-U.S. Plans | Pension Plan | Equity | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 46,000,000 107,000,000  
Non-U.S. Plans | Pension Plan | Equity | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Equity | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | U.S. companies      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,459,000,000 1,910,000,000  
Non-U.S. Plans | Pension Plan | U.S. companies | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,426,000,000 1,862,000,000  
Non-U.S. Plans | Pension Plan | U.S. companies | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 33,000,000 48,000,000  
Non-U.S. Plans | Pension Plan | U.S. companies | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | U.S. companies | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | International companies      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,002,000,000 1,313,000,000  
Non-U.S. Plans | Pension Plan | International companies | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 989,000,000 1,254,000,000  
Non-U.S. Plans | Pension Plan | International companies | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 13,000,000 59,000,000  
Non-U.S. Plans | Pension Plan | International companies | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | International companies | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Fixed Income      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 15,191,000,000 24,080,000,000  
Non-U.S. Plans | Pension Plan | Fixed Income | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 38,000,000 46,000,000  
Non-U.S. Plans | Pension Plan | Fixed Income | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 14,711,000,000 23,798,000,000  
Non-U.S. Plans | Pension Plan | Fixed Income | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 442,000,000 236,000,000  
Non-U.S. Plans | Pension Plan | Fixed Income | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | U.S. government      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 71,000,000 60,000,000  
Non-U.S. Plans | Pension Plan | U.S. government | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 36,000,000 47,000,000  
Non-U.S. Plans | Pension Plan | U.S. government | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 35,000,000 13,000,000  
Non-U.S. Plans | Pension Plan | U.S. government | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | U.S. government | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Non-U.S. government      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 12,487,000,000 20,461,000,000  
Non-U.S. Plans | Pension Plan | Non-U.S. government | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Non-U.S. government | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 12,256,000,000 20,338,000,000  
Non-U.S. Plans | Pension Plan | Non-U.S. government | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 231,000,000 123,000,000  
Non-U.S. Plans | Pension Plan | Non-U.S. government | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 2,183,000,000 2,971,000,000  
Non-U.S. Plans | Pension Plan | Corporate bonds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Corporate bonds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 2,059,000,000 2,901,000,000  
Non-U.S. Plans | Pension Plan | Corporate bonds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 124,000,000 70,000,000  
Non-U.S. Plans | Pension Plan | Corporate bonds | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Mortgage/other asset-backed      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 275,000,000 353,000,000  
Non-U.S. Plans | Pension Plan | Mortgage/other asset-backed | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Mortgage/other asset-backed | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 265,000,000 338,000,000  
Non-U.S. Plans | Pension Plan | Mortgage/other asset-backed | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 10,000,000 15,000,000  
Non-U.S. Plans | Pension Plan | Mortgage/other asset-backed | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Commingled funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 170,000,000 185,000,000  
Non-U.S. Plans | Pension Plan | Commingled funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Commingled funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 170,000,000 185,000,000  
Non-U.S. Plans | Pension Plan | Commingled funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Commingled funds | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Fixed Income Funds Net Derivative Financial Instruments      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 5,000,000 50,000,000  
Non-U.S. Plans | Pension Plan | Fixed Income Funds Net Derivative Financial Instruments | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 2,000,000 (1,000,000)  
Non-U.S. Plans | Pension Plan | Fixed Income Funds Net Derivative Financial Instruments | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount (74,000,000) 23,000,000  
Non-U.S. Plans | Pension Plan | Fixed Income Funds Net Derivative Financial Instruments | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 77,000,000 28,000,000  
Non-U.S. Plans | Pension Plan | Fixed Income Funds Net Derivative Financial Instruments | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Alternatives      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,998,000,000 2,363,000,000  
Non-U.S. Plans | Pension Plan | Alternatives | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Alternatives | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Alternatives | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Alternatives | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,998,000,000 2,363,000,000  
Non-U.S. Plans | Pension Plan | Hedge funds      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,009,000,000 1,221,000,000  
Non-U.S. Plans | Pension Plan | Hedge funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Hedge funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Hedge funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Hedge funds | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 1,009,000,000 1,221,000,000  
Non-U.S. Plans | Pension Plan | Private equity      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 584,000,000 756,000,000  
Non-U.S. Plans | Pension Plan | Private equity | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Private equity | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Private equity | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Private equity | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 584,000,000 756,000,000  
Non-U.S. Plans | Pension Plan | Real estate      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 405,000,000 386,000,000  
Non-U.S. Plans | Pension Plan | Real estate | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Real estate | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Real estate | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Real estate | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 405,000,000 386,000,000  
Non-U.S. Plans | Pension Plan | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount (1,363,000,000) (1,899,000,000)  
Non-U.S. Plans | Pension Plan | Cash and cash equivalents | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount (1,363,000,000) (1,899,000,000)  
Non-U.S. Plans | Pension Plan | Cash and cash equivalents | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Cash and cash equivalents | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Cash and cash equivalents | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Other      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 3,057,000,000 5,318,000,000  
Non-U.S. Plans | Pension Plan | Other | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount (310,000,000) (466,000,000)  
Non-U.S. Plans | Pension Plan | Other | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Other | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 3,367,000,000 5,784,000,000  
Non-U.S. Plans | Pension Plan | Other | Fair Value Measured at Net Asset Value Per Share      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount 0 0  
Non-U.S. Plans | Pension Plan | Repurchase Agreements | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount 2,100,000,000 2,600,000,000  
Non-U.S. Plans | Pension Plan | Ford Werke GmbH | Other Pension Benefit Plan Asset Insurance Contracts [Member] | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 2,500,000,000 $ 4,700,000,000  
Canada | Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Expected long-term rate of return on assets 5.03%    
United Kingdom | Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Expected long-term rate of return on assets 3.75%