Leases - Schedule of undiscounted cash flows to the finance lease liabilities and operating lease liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Operating Lease Liabilities, Payments Due [Abstract]
Year 1	$ 455	$ 452
Year 2	405	394
Year 3	344	340
Year 4	281	288
Year 5	221	228
Thereafter	1,460	1,540
Total minimum lease payments	3,166	3,242
Less: amount of lease payments representing interest	(960)	(976)
Present value of future minimum lease payments	2,206	2,266
Less: current obligations under leases	(343)	(363)
Long-term lease obligations	1,863	1,903
Finance Lease Liabilities, Payments, Due [Abstract]
Year 1	197	193
Year 2	146	155
Year 3	99	115
Year 4	81	60
Year 5	71	45
Thereafter	497	356
Total minimum lease payments	1,091	924
Less: amount of lease payments representing interest	(305)	(217)
Present value of future minimum lease payments	786	707
Less: current obligations under leases	(162)	(166)
Long-term lease obligations	$ 624	$ 541