Income Taxes - Income from Continuing Operations Before Income Tax (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income (loss) before income taxes:
Income before income taxes	$ 3,462	$ 3,169	$ 3,156
Current:
Total current tax expense	1,053	914	762
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	(311)	(373)	(252)
Total income tax expense	742	541	510
Domestic Tax Jurisdiction
Income (loss) before income taxes:
Income before income taxes	52	31	85
Current:
Total current tax expense	13	4	2
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	0	0	0
Foreign Tax Authority | U.K.
Income (loss) before income taxes:
Income before income taxes	782	338	502
Current:
Total current tax expense	233	185	206
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	(169)	(116)	(152)
Foreign Tax Authority | U.S.
Income (loss) before income taxes:
Income before income taxes	854	219	161
Current:
Total current tax expense	292	240	195
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	(83)	(126)	(69)
State and Local Jurisdiction | U.S.
Current:
Total current tax expense	79	74	43
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	(71)	(39)	(21)
Other
Income (loss) before income taxes:
Income before income taxes	1,774	2,581	2,408
Current:
Total current tax expense	436	411	316
Deferred tax expense (benefit):
Total deferred tax expense (benefit)	$ 12	$ (92)	$ (10)