Other Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Salaries, wages and accrued bonuses	$ 46	$ 61
Fringe benefits	71	71
Litigation	10	10
Restructuring costs	1	0
Provision for contract losses	40	44
Operating lease liabilities	22	22
Other	$ 64	59
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total other current liabilities
Total other current liabilities	$ 254	267
Operating lease liabilities	76	81
Other	$ 13	11
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Total other noncurrent liabilities
Total other noncurrent liabilities	$ 89	$ 92