XML 113 R62.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Landfill and Environmental Remediation Liabilities - Est payments (Detail)
$ in Millions
Dec. 31, 2019
USD ($)
Landfill and Environmental Remediation Liabilities  
Anticipated payments for currently identified environmental remediation liabilities, in 2020 $ 27
Anticipated payments for currently identified environmental remediation liabilities, in 2021 33
Anticipated payments for currently identified environmental remediation liabilities, in 2022 44
Anticipated payments for currently identified environmental remediation liabilities, in 2023 34
Anticipated payments for currently identified environmental remediation liabilities, in 2024 22
Anticipated payments for currently identified environmental remediation liabilities, after 2024 $ 72