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 tax	Net 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 change	1		(87)		3		(83)
Balances as of March 31, 2024	$	(13)	$	(2,658)	$	(484)	$	(3,155)

Three Months Ended March 31, 2023 (Millions), net of tax	Net 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 change	19		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)	2024		2023
Net unrealized gains on debt securities	$	1	$	6
Foreign currency translation adjustment, net of hedges	49		(45)
Pension and other postretirement benefits	2		5
Total tax impact	$	52	$	(34)