Contract and Other Deferred Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract assets (revenue in excess of billings)	$ 1,813		$ 1,813		$ 1,700
Deferred inventory costs	115		115		130
Non-recurring engineering costs	43		43		51
Contract and other deferred assets	1,971		1,971		1,881
Revenue recognized from performance obligations satisfied in previous periods	(8)	$ (31)	22	$ (9)
Long-term product service agreements
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract assets (revenue in excess of billings)	655		655		603
Long-term equipment contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract assets (revenue in excess of billings)	$ 1,158		$ 1,158		$ 1,097