Income Taxes - Income from Continuing Operations Before Income Tax (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income before income taxes:
Income before income taxes	$ 4,759	$ 3,462	$ 3,169
Current:
Total current tax expense	1,150	1,053	914
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	(141)	(311)	(373)
Total income tax expense	1,009	742	541
Domestic Tax Jurisdiction
Income before income taxes:
Income before income taxes	162	52	31
Current:
Total current tax expense	12	13	4
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	(1)	0	0
Foreign Tax Authority | U.K.
Income before income taxes:
Income before income taxes	663	782	338
Current:
Total current tax expense	164	233	185
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	(44)	(169)	(116)
Foreign Tax Authority | U.S.
Income before income taxes:
Income before income taxes	1,220	854	219
Current:
Total current tax expense	422	292	240
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	(92)	(83)	(126)
State and Local Jurisdiction | U.S.
Current:
Total current tax expense	110	79	74
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	20	(71)	(39)
Other
Income before income taxes:
Income before income taxes	2,714	1,774	2,581
Current:
Total current tax expense	442	436	411
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	$ (24)	$ 12	$ (92)