Other Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Salaries, wages and accrued bonuses	$ 66	$ 61
Fringe benefits	69	71
Litigation	10	10
Restructuring costs	2	1
Provision for contract losses	34	44
Operating lease liabilities	23	22
Other	$ 59	$ 58
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total other current liabilities	Total other current liabilities
Total other current liabilities	$ 263	$ 267
Operating lease liabilities	69	81
Other	$ 14	$ 11
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Total other noncurrent liabilities	Total other noncurrent liabilities
Total other noncurrent liabilities	$ 83	$ 92