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Condensed Consolidating Financial Statements - Condensed Consolidating Statements of Comprehensive Income (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Condensed Income Statements, Captions [Line Items] |  |
Comprehensive income | $ 311 | $ 325
Less: Comprehensive loss attributable to noncontrolling interests | (1) | (2)
Comprehensive income attributable to Waste Management, Inc. | 312 | 327
Eliminations [Member] |  |
Condensed Income Statements, Captions [Line Items] |  |
Comprehensive income | (689) | (611)
Comprehensive income attributable to Waste Management, Inc. | (689) | (611)
WM [Member] |  |
Condensed Income Statements, Captions [Line Items] |  |
Comprehensive income | 300 | 260
Comprehensive income attributable to Waste Management, Inc. | 300 | 260
WM Holdings [Member] |  |
Condensed Income Statements, Captions [Line Items] |  |
Comprehensive income | 343 | 304
Comprehensive income attributable to Waste Management, Inc. | 343 | 304
Non-Guarantor Subsidiaries [Member] |  |
Condensed Income Statements, Captions [Line Items] |  |
Comprehensive income | 357 | 372
Less: Comprehensive loss attributable to noncontrolling interests | (1) | (2)
Comprehensive income attributable to Waste Management, Inc. | $ 358 | $ 374

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