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	Dec. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 1,010	$ 992
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	1,010	992
Money market funds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	155	120
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	155	120
U.S. treasury securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	359	251
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	359	251
Corporate securities and commercial paper
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	487	592
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	487	592
U.S. government agency securities
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost		5
Unrealized Gain		0
Unrealized Loss		0
Fair Value		5
Certificate of deposit
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	9	24
Unrealized Gain	0	0
Unrealized Loss	0	0
Fair Value	$ 9	$ 24