Accounts Receivable, Net (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Accounts receivable, gross	$ 1,501	$ 1,534
Allowance for expected credit losses	(34)	(33)
Accounts receivable, net	1,467	1,501
US Government [Member]
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Accounts receivable, gross	1,173	956
International and Other Customers [Member]
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Accounts receivable, gross	$ 328	$ 578