Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits at beginning of period	$ 799	$ 813
Decrease in tax positions of current year netted against deferred tax assets	(24)	(50)
Increase in tax positions of prior periods netted against deferred tax assets	91	43
Decreases related to divestitures of businesses	0	(2)
Decrease from the lapse of statute of limitations	(15)	(5)
Unrecognized tax benefits at end of period	$ 851	$ 799