Revenue Contract Balances (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Accounts and notes receivable - trade	[1]	$ 3,561	$ 3,917
Contract assets - current	[2]	24	22
Contract assets - noncurrent	[3]	58	54
Deferred Revenue		3,201	2,662
Deferred Revenue Recognized During the Period		2,613	2,540	$ 2,146
Other Noncurrent Obligations [Member]
Disaggregation of Revenue [Line Items]
Deferred Revenue	[4]	$ 120	$ 116

[1] Included in accounts and notes receivable - net in the Consolidated Balance Sheets.

[2] Included in other current assets in the Consolidated Balance Sheets.

[3] Included in other assets in the Consolidated Balance Sheets.

[4] Included in other noncurrent obligations in the Consolidated Balance Sheets.