Supplementary Data - Quarterly Financial Data - Unaudited (Details) - USD ($) $ / shares in Units, shares in Millions, $ 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
Quarterly Financial Data [Abstract]
Net revenues	$ 2,613	$ 2,501	$ 2,668	$ 2,638	$ 2,478	$ 2,258	$ 2,337	$ 1,821	$ 10,420	$ 8,894	$ 7,429
Gross profit	1,919	1,823	1,996	2,032	1,930	1,780	1,920	1,467	7,770	7,097	5,844
Income from continuing operations	(893)	283	294	568	772	605	689	421	252	2,487	1,433
Income (loss) from discontinued operations, net of income taxes	2,862	(19)	10,440	73	73	59	57	2,991	13,356	3,180	353
Net income (loss)	$ 1,969	$ 264	$ 10,734	$ 641	$ 845	$ 664	$ 746	$ 3,412	$ 13,608	$ 5,667	$ 1,786
Income (loss) per share - basic:
Continuing operations (in usd per share)	$ (1.47)	$ 0.44	$ 0.44	$ 0.83	$ 1.12	$ 0.87	$ 0.98	$ 0.56	$ 0.39	$ 3.50	$ 1.69
Discontinued operations (in usd per share)	4.72	(0.03)	15.48	0.11	0.11	0.08	0.08	3.97	20.48	4.48	0.41
Net income (loss) per share - basic (in usd per share)	3.25	0.41	15.92	0.94	1.23	0.95	1.06	4.53	20.87	7.98	2.10
Income (loss) per share - diluted:
Continuing operations (in usd per share)	(1.47)	0.43	0.43	0.82	1.11	0.86	0.97	0.56	0.38	3.46	1.68
Discontinued operations (in usd per share)	4.72	(0.03)	15.25	0.10	0.10	0.08	0.08	3.95	20.16	4.43	0.41
Net income (loss) per share - diluted (in usd per share)	$ 3.25	$ 0.40	$ 15.68	$ 0.92	$ 1.21	$ 0.94	$ 1.05	$ 4.51	$ 20.54	$ 7.89	$ 2.09
Weighted average shares:
Basic (in shares)	606	647	674	681	688	696	703	753	652	710	849
Diluted (in shares)	606	658	685	693	697	708	711	757	663	718	856