Leases - Narrative (Details) $ in Millions		3 Months Ended		6 Months Ended
	Jan. 03, 2022 USD ($) renewal_Option	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease, weighted average remaining lease term		10 years		10 years
Operating lease, weighted average discount rate, percent		3.90%		3.90%
Interest payments for financing leases		$ 16	$ 17	$ 31	$ 36
Additional operating leases not yet commenced, payments due		$ 214		$ 214
Crown Agreement
Lessee, Lease, Description [Line Items]
Lessee, operating lease, renewal term (years)	5 years
Lessee, operating lease, number of renewal options | renewal_Option	3
Right-of-use asset obtained in exchange for operating and finance lease liabilities	$ 5,300
Increase to deferred tax liabilities	$ 1,300
Minimum
Lessee, Lease, Description [Line Items]
Lessee leasing arrangements, operating leases, term of contract (years)		5 years		5 years
Lessee, operating lease, renewal term (years)		5 years		5 years
Lessee leasing arrangements, finance leases, term of contract		3 years		3 years
Maximum
Lessee, Lease, Description [Line Items]
Lessee leasing arrangements, operating leases, term of contract (years)		15 years		15 years
Lessee, operating lease, renewal term (years)		50 years		50 years
Lessee leasing arrangements, finance leases, term of contract		5 years		5 years