Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Concentration Risk [Line Items]
Operating lease, impairment loss	$ 118	$ 16
Lessee, operating lease, lease not yet commenced, amount	$ 33
Lessee, operating lease, lease not yet commenced, term	12 months
Minimum
Concentration Risk [Line Items]
Non-cancelable operating leases, term	10 years
Maximum
Concentration Risk [Line Items]
Non-cancelable operating leases, term	25 years