Landfill and Environmental Remediation Liabilities - Summary (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Landfill and Environmental Remediation Liabilities
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities, Current	Accrued Liabilities, Current
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term	Long-term
Total, Environmental Remediation	$ 222
Current (in accrued liabilities)	231	$ 174
Long-term	3,048	2,888
Total	3,279	3,062
Landfill [Member]
Landfill and Environmental Remediation Liabilities
Current (in accrued liabilities), Landfill	177	143
Long-term, Landfill	2,880	2,710
Total, Landfill	3,057	2,853
Environmental Remediation Liabilities [Member]
Landfill and Environmental Remediation Liabilities
Current (in accrued liabilities), Environmental Remediation	54	31
Long-term, Environmental Remediation	168	178
Total, Environmental Remediation	$ 222	$ 209