Supplemental Balance Sheet Information (Parenthetical) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2021	Dec. 31, 2020
Supplemental Balance Sheet Information Disclosure [Abstract]
Investment in long-term time deposits	[1]	$ 63	$ 61
Investment in long-term time deposits, maturity term		3 years	3 years

[1] As of March 31, 2021 and December 31, 2020, the Company had $63 million and $61 million invested in long-term time deposits, bearing a fixed interest rate with original maturity of three years. The asset is restricted for use in order to secure the balance of prepaid stored-value cards issued by the Company pursuant to regulatory requirements.