Income Taxes - Schedule of Reserve for Uncertain Tax Positions That May BE Challenged (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Gross unrecognized tax benefits, beginning of period	$ 354	$ 305
Gross increases:
Current year tax positions	9	31
Acquired reserves	0	118
Prior year tax positions	12	7
Gross decreases:
Settlements	(13)	(96)
Prior year tax positions	(4)	(11)
Statute of limitation lapses	(3)	0
Gross unrecognized tax benefits, end of period	$ 355	$ 354