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DEBT AND EQUITY SECURITIES - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Total $ 2,409 $ 1,790
Level One—Quoted Prices in Active Markets for Identical Assets | Interest-bearing money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 638 599
Level One—Quoted Prices in Active Markets for Identical Assets | Mutual funds and exchange-traded funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 555 495
Level One—Quoted Prices in Active Markets for Identical Assets | Common shares    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 164 114
Level Two—Significant Other Observable Inputs | Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 404 36
Level Two—Significant Other Observable Inputs | U.S. government obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 307 250
Level Two—Significant Other Observable Inputs | U.S. government agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 21 37
Level Two—Significant Other Observable Inputs | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 249 212
Level Two—Significant Other Observable Inputs | Mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 29 19
Level Two—Significant Other Observable Inputs | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 38 24
Level Two—Significant Other Observable Inputs | Municipal and provincial notes and bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 4 4
Cash and cash equivalents    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Total 658 599
Cash and cash equivalents | Level One—Quoted Prices in Active Markets for Identical Assets | Interest-bearing money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 638 599
Cash and cash equivalents | Level One—Quoted Prices in Active Markets for Identical Assets | Mutual funds and exchange-traded funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 0 0
Cash and cash equivalents | Level One—Quoted Prices in Active Markets for Identical Assets | Common shares    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 0 0
Cash and cash equivalents | Level Two—Significant Other Observable Inputs | Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 20 0
Cash and cash equivalents | Level Two—Significant Other Observable Inputs | U.S. government obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 0 0
Cash and cash equivalents | Level Two—Significant Other Observable Inputs | U.S. government agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 0 0
Cash and cash equivalents | Level Two—Significant Other Observable Inputs | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 0 0
Cash and cash equivalents | Level Two—Significant Other Observable Inputs | Mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 0 0
Cash and cash equivalents | Level Two—Significant Other Observable Inputs | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 0 0
Cash and cash equivalents | Level Two—Significant Other Observable Inputs | Municipal and provincial notes and bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 0 0
Short-term investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Total 372 15
Short-term investments | Level One—Quoted Prices in Active Markets for Identical Assets | Interest-bearing money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 0 0
Short-term investments | Level One—Quoted Prices in Active Markets for Identical Assets | Mutual funds and exchange-traded funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 0 0
Short-term investments | Level One—Quoted Prices in Active Markets for Identical Assets | Common shares    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 0 0
Short-term investments | Level Two—Significant Other Observable Inputs | Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 355 10
Short-term investments | Level Two—Significant Other Observable Inputs | U.S. government obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 5 0
Short-term investments | Level Two—Significant Other Observable Inputs | U.S. government agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 0 0
Short-term investments | Level Two—Significant Other Observable Inputs | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 12 5
Short-term investments | Level Two—Significant Other Observable Inputs | Mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 0 0
Short-term investments | Level Two—Significant Other Observable Inputs | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 0 0
Short-term investments | Level Two—Significant Other Observable Inputs | Municipal and provincial notes and bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 0 0
Other assets    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Total 1,379 1,176
Other assets | Level One—Quoted Prices in Active Markets for Identical Assets | Interest-bearing money market funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 0 0
Other assets | Level One—Quoted Prices in Active Markets for Identical Assets | Mutual funds and exchange-traded funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 555 495
Other assets | Level One—Quoted Prices in Active Markets for Identical Assets | Common shares    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Cash equivalents 164 114
Other assets | Level Two—Significant Other Observable Inputs | Time deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 29 26
Other assets | Level Two—Significant Other Observable Inputs | U.S. government obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 302 250
Other assets | Level Two—Significant Other Observable Inputs | U.S. government agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 21 37
Other assets | Level Two—Significant Other Observable Inputs | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 237 207
Other assets | Level Two—Significant Other Observable Inputs | Mortgage-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 29 19
Other assets | Level Two—Significant Other Observable Inputs | Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale 38 24
Other assets | Level Two—Significant Other Observable Inputs | Municipal and provincial notes and bonds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt securities, available-for-sale $ 4 $ 4