Strategic Investments (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Schedule of Investments [Line Items]
Equity method investments	$ 246	$ 319
Measurement alternative investments(1)	182	183
Equity Securities, FV-NI	213	414
Notes receivable	2	2
Investments	643	$ 918
Equity Securities, FV-NI, Gain (Loss)	(146)
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	$ 286

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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