Segment Information - Reconciliation of Income Before Income Tax Expense to Reportable Segments Operating Gain Included in the Consolidated Statements of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Income before income tax expense	$ 6,710	$ 7,904	$ 7,715
Net investment income	(2,194)	(2,051)	(1,825)
Net losses on financial instruments	653	445	694
Gain on sale of business	0	(201)	0
Interest expense	1,402	1,185	1,030
Amortization of other intangible assets	628	580	885
Reportable segments’ operating gain	7,199	7,862	8,499
Reportable Segments
Segment Reporting Information [Line Items]
Income before income tax expense	6,710	7,904	7,715
Net investment income	(2,194)	(2,051)	(1,825)
Net losses on financial instruments	653	445	694
Gain on sale of business	0	(201)	0
Interest expense	1,402	1,185	1,030
Amortization of other intangible assets	628	580	885
Reportable segments’ operating gain	$ 7,199	$ 7,862	$ 8,499