Leases - Summary of Information related to operating leases (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Right-of-use assets	$ 4,975	$ 5,091
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other	Other
Lease liabilities	$ 4,939	$ 4,991
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	us-gaap:AccountsPayableAndOtherAccruedLiabilities	us-gaap:AccountsPayableAndOtherAccruedLiabilities
Weighted average remaining term in years	7 years	7 years 2 months 12 days
Weighted average discount rate used to measure lease liabilities	3.70%	3.50%