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Leases Maturities of Lease Liabilities (Details)
$ in Millions
Dec. 31, 2021
USD ($)
Leases [Abstract]  
Lessee, Operating Lease, Liability, to be Paid, Year One $ 556
Lessee, Operating Lease, Liability, to be Paid, Year Two 553
Lessee, Operating Lease, Liability, to be Paid, Year Three 545
Lessee, Operating Lease, Liability, to be Paid, Year Four 530
Lessee, Operating Lease, Liability, to be Paid, Year Five 520
Lessee, Operating Lease, Liability, to be Paid, after Year Five 5,749
Lessee, Operating Lease, Liability, Undiscounted Excess Amount (2,073)
Operating Lease, Liability 6,380
Lessee, Operating Lease, Liability, to be Paid, Year One 556
Lessee, Operating Lease, Liability, to be Paid, Year Two 553
Lessee, Operating Lease, Liability, to be Paid, Year Three 545
Lessee, Operating Lease, Liability, to be Paid, Year Four 530
Lessee, Operating Lease, Liability, to be Paid, Year Five 520
Lessee, Operating Lease, Liability, to be Paid, after Year Five 5,749
Lessee, Operating Lease, Liability, to be Paid 8,453
Lessee, Operating Lease, Liability, Undiscounted Excess Amount 2,073
Operating Lease, Liability $ 6,380