Contract and Other Deferred Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract assets (total revenue in excess of billings)	$ 1,820	$ 1,700
Deferred inventory costs	138	130
Non-recurring engineering costs	43	51
Contract and other deferred assets	2,001	1,881
Revenue recognized from performance obligations satisfied in previous periods	17	(1)
Long-term product service agreements
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract assets (total revenue in excess of billings)	660	603
Long-term equipment contract
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract assets (total revenue in excess of billings)	$ 1,160	$ 1,097