Stockholders' Equity and EPS - Reconciliation of Basic EPS to Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net income available to common stockholders	$ 333	$ 502	$ 805	$ 1,034
Denominator:
Weighted average common shares outstanding-basic (in shares)	58,935	54,353	58,868	53,272
Weighted average common shares outstanding—diluted (in shares)	59,454	55,152	59,530	54,116
Earnings per common share:
Basic (dollars per share)	$ 5.65	$ 9.23	$ 13.68	$ 19.40
Diluted (dollars per share)	$ 5.60	$ 9.09	$ 13.52	$ 19.10
Stock options and ESPP
Denominator:
Weighted average effect of dilutive securities (in shares)	192	272	221	274
Restricted stock units and awards
Denominator:
Weighted average effect of dilutive securities (in shares)	327	527	441	570