Accumulated Other Comprehensive Income - Reclassifications Out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenues	$ 2,613	$ 2,501	$ 2,668	$ 2,638	$ 2,478	$ 2,258	$ 2,337	$ 1,821	$ 10,420	$ 8,894	$ 7,429
Cost of net revenues									(2,650)	(1,797)	(1,585)
Interest and other, net									(160)	(298)	(251)
Income from continuing operations before income taxes									398	3,345	1,652
Income tax provision									(146)	(858)	(219)
Income from continuing operations	(893)	283	294	568	772	605	689	421	252	2,487	1,433
Discontinued operations net of income taxes	2,862	(19)	10,440	73	73	59	57	2,991	13,356	3,180	353
Net income	$ 1,969	$ 264	$ 10,734	$ 641	$ 845	$ 664	$ 746	$ 3,412	13,608	5,667	$ 1,786
Amount of Gain (Loss) Reclassified from AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income									80	12
Amount of Gain (Loss) Reclassified from AOCI | Unrealized Gains (Losses) on Derivative Instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations before income taxes									(59)	15
Income tax provision									13	(3)
Income from continuing operations									(46)	12
Amount of Gain (Loss) Reclassified from AOCI | Unrealized Gains (Losses) on Derivative Instruments | Foreign Exchange Contract
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenues									(65)	15
Cost of net revenues									4	0
Amount of Gain (Loss) Reclassified from AOCI | Unrealized Gains (Losses) on Derivative Instruments | Interest Rate Contract
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other, net									2	0
Amount of Gain (Loss) Reclassified from AOCI | Unrealized Gains (Losses) on Investments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other, net									1
Income from continuing operations before income taxes									1	0
Income tax provision									0	0
Net income									1
Amount of Gain (Loss) Reclassified from AOCI | Foreign Currency Translation
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Discontinued operations net of income taxes									$ 125	$ 0