Leases (Textuals) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating liability, current	$ 69	$ 63
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued Liabilities, Current	Accrued Liabilities, Current
Operating liability, noncurrent	$ 243	$ 216
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Accrued Liabilities, Noncurrent	Other Accrued Liabilities, Noncurrent
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent	Other Assets, Noncurrent
Right-of-use assets	$ 304	$ 272
Revenue from lease arrangements	197	195	$ 247
Assets subject to rental	251	241
Assets subject to rental, accumulated amortization	158	159
Depreciation, Lessor Asset under Operating Lease	$ 24	$ 25	$ 28