Condensed Consolidating Financial Statements - Condensed Consolidating Balance Sheets (Parenthetical) (Detail) - USD ($) $ in Millions |
Sep. 30, 2016 |
Dec. 31, 2015 |
---|---|---|
Condensed Financial Statements, Captions [Line Items] | ||
Long-term debt, less current portion | $ 8,829 | $ 8,676 |
Intercompany loans | 5,900 | |
WM [Member] | ||
Condensed Financial Statements, Captions [Line Items] | ||
Long-term debt, less current portion | 6,072 | $ 5,801 |
WM [Member] | Immaterial Corrections from Non-Guarantor Subsidiaries to WM [Member] | Tax-exempt Bonds [Member] | ||
Condensed Financial Statements, Captions [Line Items] | ||
Long-term debt, less current portion | $ 126 |