Cash, Cash Equivalents and Marketable Securities - Schedule of Amortized Cost, Gross Unrealized Gains and Losses and Fair Value of Our Cash, Cash Equivalents and Marketable Securities Considered as Available for Sale by Type of Securities (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 953	$ 1,145
Unrealized Gain	0	0
Unrealized Loss	(3)	(7)
Fair Value	950	1,138
Money market funds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	110	169
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	110	169
U.S. treasury securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	246	317
Unrealized Gain	0	0
Unrealized Loss	(1)	(3)
Fair Value	245	314
Corporate securities and commercial paper
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	493	635
Unrealized Gain	0	0
Unrealized Loss	(2)	(4)
Fair Value	491	631
U.S. government agency securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	96	20
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	96	20
Certificate of deposit
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	8	4
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	$ 8	$ 4