Changes in Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2021

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 and six months ended June 30, 2021 and 2020 were as follows:

Three Months Ended June 30, 2021 (Millions), net of tax	Net Unrealized Gains (Losses) on Debt Securities		Foreign Currency Translation Adjustment Gains (Losses)		Net Unrealized Pension and Other Postretirement Benefit Gains (Losses)		Accumulated Other Comprehensive Income (Loss)
Balances as of March 31, 2021	$	53	$	(2,246)	$	(705)	$	(2,898)
Net unrealized losses	(11)		—		—		(11)
Net translation on investments in foreign operations	—		127		—		127
Net hedges of investments in foreign operations	—		(108)		—		(108)
Pension and other postretirement benefits	—		—		9		9
Net change in accumulated other comprehensive income (loss)	(11)		19		9		17
Balances as of June 30, 2021	$	42	$	(2,227)	$	(696)	$	(2,881)

Six Months Ended June 30, 2021 (Millions), net of tax	Net Unrealized Gains (Losses) on Debt Securities		Foreign Currency Translation Adjustment Gains (Losses)		Net Unrealized Pension and Other Postretirement Benefit Gains (Losses)		Accumulated Other Comprehensive  Income (Loss)
Balances as of December 31, 2020	$	65	$	(2,229)	$	(731)	$	(2,895)
Net unrealized losses	(23)		—		—		(23)
Net translation on investments in foreign operations	—		104		—		104
Net hedges of investments in foreign operations	—		(102)		—		(102)
Pension and other postretirement benefits	—		—		35		35
Net change in accumulated other comprehensive income (loss)	(23)		2		35		14
Balances as of June 30, 2021	$	42	$	(2,227)	$	(696)	$	(2,881)

Three Months Ended June 30, 2020 (Millions), net of tax	Net Unrealized Gains (Losses) on Debt Securities		Foreign Currency Translation Adjustment Gains (Losses)		Net Unrealized Pension and Other Postretirement Benefit Gains (Losses)		Accumulated Other Comprehensive Income (Loss)
Balances as of March 31, 2020	$	90	$	(2,511)	$	(575)	$	(2,996)
Net unrealized losses	(5)		—		—		(5)
Decrease due to amounts reclassified into earnings	—		(3)		—		(3)
Net translation on investments in foreign operations	—		465		—		465
Net hedges of investments in foreign operations	—		(339)		—		(339)
Pension and other postretirement benefits	—		—		(33)		(33)
Net change in accumulated other comprehensive income (loss)	(5)		123		(33)		85
Balances as of June 30, 2020	$	85	$	(2,388)	$	(608)	$	(2,911)

Six Months Ended June 30, 2020 (Millions), net of tax	Net Unrealized Gains (Losses) on Debt Securities		Foreign Currency Translation Adjustment Gains (Losses)		Net Unrealized Pension and Other Postretirement Benefit Gains (Losses)		Accumulated Other Comprehensive Income (Loss)
Balances as of December 31, 2019	$	33	$	(2,189)	$	(581)	$	(2,737)
Net unrealized gains	52		—		—		52
Decrease due to amounts reclassified into earnings	—		(3)		—		(3)
Net translation on investments in foreign operations	—		(589)		—		(589)
Net hedges of investments in foreign operations	—		393		—		393
Pension and other postretirement benefits	—		—		(27)		(27)
Net change in accumulated other comprehensive income (loss)	52		(199)		(27)		(174)
Balances as of June 30, 2020	$	85	$	(2,388)	$	(608)	$	(2,911)

AOCI income tax effect

The following table shows the tax impact for the three and six months ended June 30 for the changes in each component of AOCI presented above:

	Tax expense (benefit)
	Three Months Ended June 30,				Six Months Ended June 30,
(Millions)	2021		2020		2021		2020
Net unrealized (losses) gains on debt securities	$	(3)	$	(2)	$	(6)	$	16
Net translation on investments in foreign operations	(3)		(6)		5		24
Net hedges of investments in foreign operations	(35)		(106)		(35)		124
Pension and other postretirement benefits	2		(1)		13		11
Total tax impact	$	(39)	$	(115)	$	(23)	$	175