Income Tax (Reconciliation of Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Unrecognized Tax Benefits
Balance at January 1,	$ 131	$ 129	$ 163
Additions for tax positions of prior years (1)	127	27	42
Reductions for tax positions of prior years (2)	(43)	(30)	(93)
Additions for tax positions of current year	4	5	22
Reductions for tax positions of current year	0	0	(3)
Settlements with tax authorities	(1)	0	(2)
Balance at December 31,	218	131	129
Unrecognized tax benefits that, if recognized, would impact the effective rate	$ 162	$ 90	$ 80