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Investments - Narrative (Details) - USD ($)	6 Months Ended
Investments - Narrative (Details) - USD ($)	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Available for sale realized gain (loss)	$ 0	$ 0
Equity Method Investments	66,000,000		$ 63,000,000
Cost method investments	2,000,000		3,000,000
Short-term Investments [Member]
Schedule of Held-to-maturity Securities [Line Items]
Available-for-sale investment securities	448,000,000		310,000,000
Maximum
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	1,000,000		1,000,000
Commercial paper
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	16,000,000		10,000,000
Corporate debt securities
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 12,000,000		$ 17,000,000