Restructuring Programs and Related Costs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Restructuring Cost and Reserve [Line Items]
Strategic transformation costs	$ 0	$ 1,000,000	$ 2,000,000	$ 3,000,000
Restructuring Reserve [Roll Forward]
Balance at beginning of period			6,000,000	6,000,000
Provision			23,000,000	32,000,000
Changes in estimates			(1,000,000)	(4,000,000)
Total Net Current Period Charges	4,000,000	9,000,000	22,000,000	28,000,000
Charges against reserve and currency			(27,000,000)	(32,000,000)
Balance at end of period	1,000,000	2,000,000	1,000,000	2,000,000
Unallocated Costs
Restructuring Reserve [Roll Forward]
Total Net Current Period Charges	3,000,000	8,000,000	20,000,000	25,000,000
Commercial: | Operating Segments
Restructuring Reserve [Roll Forward]
Total Net Current Period Charges	1,000,000	1,000,000	2,000,000	3,000,000
Government Services: | Operating Segments
Restructuring Reserve [Roll Forward]
Total Net Current Period Charges	0	0	0	0
Transportation: | Operating Segments
Restructuring Reserve [Roll Forward]
Total Net Current Period Charges	0	0	0	0
Divestitures | Operating Segments
Restructuring Reserve [Roll Forward]
Total Net Current Period Charges	0	0	0	0
Severance and Related Costs
Restructuring Reserve [Roll Forward]
Balance at beginning of period			5,000,000	3,000,000
Provision			4,000,000	2,000,000
Changes in estimates			(1,000,000)	0
Total Net Current Period Charges			3,000,000	2,000,000
Charges against reserve and currency			(7,000,000)	(4,000,000)
Balance at end of period	1,000,000	1,000,000	1,000,000	1,000,000
Termination and Other Costs
Restructuring Reserve [Roll Forward]
Balance at beginning of period			1,000,000	3,000,000
Provision			13,000,000	23,000,000
Changes in estimates			0	(4,000,000)
Total Net Current Period Charges			13,000,000	19,000,000
Charges against reserve and currency			(14,000,000)	(21,000,000)
Balance at end of period	0	1,000,000	0	1,000,000
Asset Impairments
Restructuring Reserve [Roll Forward]
Balance at beginning of period			0	0
Provision			6,000,000	7,000,000
Changes in estimates			0	0
Total Net Current Period Charges			6,000,000	7,000,000
Charges against reserve and currency			(6,000,000)	(7,000,000)
Balance at end of period	0	0	0	0
Data Center Consolidation | Termination and Other Costs
Restructuring Reserve [Roll Forward]
Provision	$ 2,000,000	$ 4,000,000	$ 9,000,000	$ 19,000,000