Other Financial Data - Schedule of Other Current Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Other Financial Data [Abstract]
Deferred revenue	$ 340		$ 296
Taxes payable	137		80
Leases	222		234
Other	602		561
Total	1,301		$ 1,171
Revenue recognized from deferred revenue	$ 171	$ 117