Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2024

Other Comprehensive Income And Accumulated Other Comprehensive Income Disclosure [Abstract]

Changes in accumulated other comprehensive income (loss) (AOCI) [Table Text Block]

The following table presents the changes in the Company’s accumulated other comprehensive income (loss) (AOCI) for the years ended December 31, 2024, 2023 and 2022.

	Changes in Net Unrealized Gains (Losses) on Investment Securities
(in millions)	Having No Credit Losses Recognized in the Consolidated Statement of Income		Having Credit Losses Recognized in the Consolidated Statement of Income		Net Benefit Plan Assets and Obligations Recognized in Shareholders’ Equity		Net Unrealized Foreign Currency Translation		Total Accumulated Other Comprehensive Income (Loss)
Balance, December 31, 2021	$	2,233	$	182	$	(473)	$	(749)	$	1,193
Other comprehensive income (loss) (OCI) before reclassifications, net of tax	(7,387)		(3)		(102)		(256)		(7,748)
Amounts reclassified from AOCI, net of tax	77		—		33		—		110
Net OCI, current period	(7,310)		(3)		(69)		(256)		(7,638)
Balance, December 31, 2022	(5,077)		179		(542)		(1,005)		(6,445)
OCI before reclassifications, net of tax	1,692		1		94		121		1,908
Amounts reclassified from AOCI, net of tax	76		—		(10)		—		66
Net OCI, current period	1,768		1		84		121		1,974
Balance, December 31, 2023	(3,309)		180		(458)		(884)		(4,471)
OCI before reclassifications, net of tax	(619)		4		238		(219)		(596)
Amounts reclassified from AOCI, net of tax	104		—		(4)		—		100
Net OCI, current period	(515)		4		234		(219)		(496)
Balance, December 31, 2024	$	(3,824)	$	184	$	(224)	$	(1,103)	$	(4,967)

Pre-tax components of other comprehensive income (loss) and the related income tax expense (benefit) for each component [Table Text Block]

The following table presents the pre-tax components of the Company’s other comprehensive income (loss) and the related income tax expense (benefit).

(for the year ended December 31, in millions)	2024		2023		2022
Changes in net unrealized gains (losses) on investment securities:
Having no credit losses recognized in the consolidated statement of income	$	(644)	$	2,249	$	(9,276)
Income tax expense (benefit)	(129)		481		(1,966)
Net of taxes	(515)		1,768		(7,310)
Having credit losses recognized in the consolidated statement of income	5		1		(4)
Income tax expense (benefit)	1		—		(1)
Net of taxes	4		1		(3)
Net changes in benefit plan assets and obligations	296		106		(87)
Income tax expense (benefit)	62		22		(18)
Net of taxes	234		84		(69)
Net changes in unrealized foreign currency translation	(232)		138		(273)
Income tax expense (benefit)	(13)		17		(17)
Net of taxes	(219)		121		(256)
Total other comprehensive income (loss)	(575)		2,494		(9,640)
Income tax expense (benefit)	(79)		520		(2,002)
Total other comprehensive income (loss), net of taxes	$	(496)	$	1,974	$	(7,638)

Pre-tax and related income tax (expense) benefit components of the amounts reclassified from AOCI to the consolidated statement of income [Table Text Block]

The following table presents the pre-tax and related income tax (expense) benefit components of the amounts reclassified from the Company’s AOCI to the Company’s consolidated statement of income.

(for the year ended December 31, in millions)	2024		2023		2022
Reclassification adjustments related to unrealized gains (losses) on investment securities:
Having no credit losses recognized in the consolidated statement of income (1)	$	131	$	96	$	98
Income tax benefit (2)	27		20		21
Net of taxes	104		76		77
Having credit losses recognized in the consolidated statement of income (1)	—		—		—
Income tax benefit (2)	—		—		—
Net of taxes	—		—		—
Reclassification adjustment related to benefit plan assets and obligations:
Claims and claim adjustment expenses (benefit) (3)	(2)		(5)		17
General and administrative expenses (benefit) (3)	(3)		(8)		24
Total	(5)		(13)		41
Income tax (expense) benefit (2)	(1)		(3)		8
Net of taxes	(4)		(10)		33
Reclassification adjustment related to foreign currency translation (1)	—		—		—
Income tax benefit (2)	—		—		—
Net of taxes	—		—		—
Total reclassifications	126		83		139
Total income tax benefit	26		17		29
Total reclassifications, net of taxes	$	100	$	66	$	110

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(1)(Increases) decreases net realized investment losses on the consolidated statement of income.

(2)(Increases) decreases income tax expense on the consolidated statement of income.

(3)Increases (decreases) expenses on the consolidated statement of income.