Leases - Balance Sheet Information Related to Operating & Finance Leases (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease right-of-use assets — net	$ 652	$ 720
Finance lease right-of-use assets — net	$ 90	$ 108
Operating Lease obligations:
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current portion of operating and finance lease obligations	Current portion of operating and finance lease obligations
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current portion of operating and finance lease obligations	Current portion of operating and finance lease obligations
Current operating lease obligations	$ 321	$ 347
Long-term operating lease obligations	404	459
Total lease obligations	725	806
Finance Lease Obligations:
Current finance lease obligations	25	23
Long-term finance lease obligations	132	156
Total lease obligations	157	179
Finance lease ROU assets cost	212	212
Finance lease ROU assets accumulated amortization	$ 122	$ 104