Accrued Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Accrued Liabilities [Abstract]
Accounts payable non-trade	$ 298	$ 369
Allowance for sales returns	193	238
Employee-related Liabilities	181	112
Other	289	326
Accrued liabilities	$ 961	$ 1,045