Leases - Schedule Of Lease-Related Assets And Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Assets:
Operating leases	$ 2,207	$ 2,065
Finance leases	556	587
Total lease assets	$ 2,763	$ 2,652
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Operating leases	Operating leases
Liabilities
Operating leases	$ 363	$ 364
Finance leases	166	131
Right-of-use operating lease obligations	1,903	1,752
Finance leases	541	579
Total lease liabilities	$ 2,973	$ 2,826
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Less amounts due within one year	Less amounts due within one year
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Accrued Liabilities, Current	Other Accrued Liabilities, Current
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-Term Debt, Excluding Current Maturities	Long-Term Debt, Excluding Current Maturities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Right-of-use operating lease obligations	Right-of-use operating lease obligations
Weighted-average remaining term:
Operating leases	11 years 9 months 18 days	10 years 1 month 6 days
Finance leases	9 years	9 years 6 months
Weighted-average discount rate:
Operating leases	4.90%	4.40%
Finance leases	4.90%	4.50%