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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		9 Months Ended
Leases - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Lessee, Lease, Description [Line Items]
Total future lease payments under operating leases	$ 25,590		$ 25,590
Operating leases (in years)	11 years 4 months 24 days		11 years 4 months 24 days
Operating Lease, Lease Not yet Commenced
Lessee, Lease, Description [Line Items]
Lease not yet commenced	$ 18,490		$ 18,490
2022 Restructuring
Lessee, Lease, Description [Line Items]
Restructuring charges		$ 344		$ 1,148
Operating Lease, ROU Asset \| 2022 Restructuring
Lessee, Lease, Description [Line Items]
Restructuring charges	$ 8	$ 179	$ 291	$ 990
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, not yet commenced, term (in years)	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, not yet commenced, term (in years)	25 years		25 years