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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Leases - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Lessee, Lease, Description [Line Items]
Total future lease payments under operating leases	$ 24,530		$ 24,530
Operating leases (in years)	11 years 2 months 12 days		11 years 2 months 12 days
Operating Lease, Lease Not yet Commenced
Lessee, Lease, Description [Line Items]
Lease not yet commenced	$ 6,200		$ 6,200
2022 Restructuring
Lessee, Lease, Description [Line Items]
Restructuring charges		$ 184		$ 804
Operating Lease, ROU Asset \| 2022 Restructuring
Lessee, Lease, Description [Line Items]
Restructuring charges	$ 41	$ 138	$ 282	$ 811
Minimum
Lessee, Lease, Description [Line Items]
Lease not yet commenced, term (in years)	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease not yet commenced, term (in years)	25 years		25 years