Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2021
NUMERATOR:
Net income	$ 760	$ 348	$ 482	$ 463
Add: Interest expense	4	0	8	0
Net income attributable to common stockholders	$ 764	$ 348	$ 490	$ 463
DENOMINATOR:
Weighted-average shares outstanding, Basic (in shares)	593	591	593	591
Dilutive effects of convertible notes (in shares)	41	22	46	19
Dilutive effect of stock warrants (in shares)	0	1	0	1
Dilutive effect of restricted stock units (in shares)	1	1	1	1
Diluted (in shares)	635	615	640	612
NET INCOME PER SHARE:
BASIC (in USD per share)	$ 1.29	$ 0.59	$ 0.83	$ 0.78
Diluted (in USD per share)	$ 1.20	$ 0.57	$ 0.77	$ 0.76
Initial conversion price (in USD per share)					$ 38.48