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, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 1,090	$ 866
Unrealized Gain	1	1
Unrealized Loss	0	(1)
Fair Value	1,091	866
Money market funds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	134	85
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	134	85
U.S. treasury securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	258	213
Unrealized Gain	0	1
Unrealized Loss	0	(1)
Fair Value	258	213
Corporate securities and commercial paper
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	667	471
Unrealized Gain	1	0
Unrealized Loss	0	0
Fair Value	668	471
U.S. government agency securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	9	90
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	9	90
Certificate of deposit
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	22	7
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	$ 22	$ 7