Supplemental Information - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Derivatives – net of taxes	$ 75	$ 4
Pension/OPEB funded status obligation (net of $305 million and $560 million tax benefit in 2021 and 2020) (Note 16)	(1,130)	(1,876)
Accumulated other comprehensive income (loss)	(5,048)	(4,690)
Pension/OPEB funded status obligation, tax benefit	305	560
Americas
Segment Reporting Information [Line Items]
Cumulative translation adjustment - net of taxes	(3,985)	(3,788)
EMEA
Segment Reporting Information [Line Items]
Cumulative translation adjustment - net of taxes	94	1,020
APAC
Segment Reporting Information [Line Items]
Cumulative translation adjustment - net of taxes	154	616
Engineering
Segment Reporting Information [Line Items]
Cumulative translation adjustment - net of taxes	24	354
Other
Segment Reporting Information [Line Items]
Cumulative translation adjustment - net of taxes	(280)	(1,020)
Total
Segment Reporting Information [Line Items]
Cumulative translation adjustment - net of taxes	$ (3,993)	$ (2,818)