v3.24.1.u1
Changes in Accumulated Other Comprehensive Income (Loss) (Tables)
 3 Months Ended
Mar. 31, 2024
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]  
Components of comprehensive income (loss), net of tax Changes in each component for the three months ended March 31, 2024 and 2023 were as follows:
Three Months Ended March 31, 2024 (Millions), net of taxNet Unrealized
Gains (Losses) on
Debt Securities
Foreign Currency
Translation Adjustment Gains (Losses), net of hedges (a)
Net Unrealized
Pension and Other
Postretirement
Benefit Gains
(Losses)		Accumulated Other
Comprehensive
Income (Loss)
Balances as of December 31, 2023$(14)$(2,571)$(487)$(3,072)
Net change1 (87)3 (83)
Balances as of March 31, 2024$(13)$(2,658)$(484)$(3,155)
Three Months Ended March 31, 2023 (Millions), net of taxNet Unrealized
Gains (Losses) on
Debt Securities
Foreign Currency
Translation
Adjustment Gains (Losses), net of hedges (a)
Net Unrealized
Pension and Other
Postretirement
Benefit Gains (Losses)		Accumulated
Other
Comprehensive
Income (Loss)
Balances as of December 31, 2022$(64)$(2,622)$(524)$(3,210)
Net change19 28 57 104 
Balances as of March 31, 2023$(45)$(2,594)$(467)$(3,106)
(a)Refer to Note 8 for additional information on hedging activity.
AOCI income tax effect
The following table shows the tax impact for the three months ended March 31 for the changes in each component of AOCI presented above:
Tax expense (benefit)
Three Months Ended
March 31,
(Millions)20242023
Net unrealized gains on debt securities
$1 $6 
Foreign currency translation adjustment, net of hedges49 (45)
Pension and other postretirement benefits2 5 
Total tax impact$52 $(34)