Commitments and Contingencies (Schedule of Commercial Aerospace Industry Commitments) (Details) $ in Millions	Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items]
Commercial aerospace commitments (net of collaboration partners’ share) (Note 19)	$ 11,000
Commercial Aerospace [Member]
Loss Contingencies [Line Items]
Commercial aerospace financing commitments, total committed	3,883
Commercial aerospace financing commitments within one year	781
Commercial aerospace financing commitments within two years	745
Commercial aerospace financing commitments within three years	1,216
Commercial aerospace financing commitments within four years	1,024
Commercial aerospace financing commitments within five years	82
Commercial aerospace financing commitments after five years	35
Commercial aerospace commitments (net of collaboration partners’ share) (Note 19)	9,534
Other commercial aerospace commitments within one year	521
Other commercial aerospace commitments within two years	533
Other commercial aerospace commitments within three years	602
Other commercial aerospace commitments within four years	510
Other commercial aerospace commitments within five years	410
Other commercial aerospace commitments after five years	6,958
Collaboration partners' share, total committed	(4,902)
Collaboration partners' share within one year	(415)
Collaboration partner share, two years	(437)
Collaboration partner share, three years	(667)
Collaboration partner share, four years	(587)
Collaboration partner share, five years	(150)
Collaboration partner share, after five years	(2,646)
Commercial aerospace commitments, Total	8,515
Total commercial aerospace commitments, current	887
Total commercial aerospace commitments, two years	841
Total commercial aerospace commitments, three years	1,151
Total commercial aerospace commitments, four years	947
Total commercial aerospace commitments, five years	342
Total commercial aerospace commitments, after five years	$ 4,347