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Condensed Consolidating Financial Statements - Condensed Consolidating Statements of Comprehensive Income (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Condensed Income Statements, Captions [Line Items] |  |  |  |
Comprehensive income | $ 394 | $ 295 | $ 705 | $ 620
Less: Comprehensive loss attributable to noncontrolling interests | (1) | (1) | (2) | (3)
Comprehensive income attributable to Waste Management, Inc. | 395 | 296 | 707 | 623
Eliminations [Member] |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |
Comprehensive income | (815) | (669) | (1,504) | (1,280)
Comprehensive income attributable to Waste Management, Inc. | (815) | (669) | (1,504) | (1,280)
WM [Member] | Reportable Legal Entities [Member] |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |
Comprehensive income | 364 | 289 | 664 | 549
Comprehensive income attributable to Waste Management, Inc. | 364 | 289 | 664 | 549
WM Holdings [Member] | Reportable Legal Entities [Member] |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |
Comprehensive income | 406 | 333 | 749 | 637
Comprehensive income attributable to Waste Management, Inc. | 406 | 333 | 749 | 637
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member] |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |
Comprehensive income | 439 | 342 | 796 | 714
Less: Comprehensive loss attributable to noncontrolling interests | (1) | (1) | (2) | (3)
Comprehensive income attributable to Waste Management, Inc. | $ 440 | $ 343 | $ 798 | $ 717

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