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Condensed Consolidating Financial Statements - Condensed Consolidating Statements of Operations (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ 3,460 | $ 3,548 | $ 3,425 | $ 3,176 | $ 3,246 | $ 3,360 | $ 3,315 | $ 3,040 | $ 13,609 | $ 12,961 | $ 13,996
Costs and expenses |  |  |  |  |  |  |  |  | 11,313 | 10,916 | 11,697
Income from operations | 617 | 560 | 611 | 508 | 502 | 601 | 502 | 440 | 2,296 | 2,045 | 2,299
Other income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | (376) | (385) | (466)
Loss on early extinguishment of debt |  |  |  |  |  |  |  |  | (4) | (555) |
Other, net |  |  |  |  |  |  |  |  | (94) | (45) | (82)
Total other income (expense) |  |  |  |  |  |  |  |  | (474) | (985) | (548)
Income before income taxes |  |  |  |  |  |  |  |  | 1,822 | 1,060 | 1,751
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  | 642 | 308 | 413
Consolidated net income | 334 | 304 | 286 | 256 | 273 | 337 | 273 | (131) | 1,180 | 752 | 1,338
Less: Net income (loss) attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (2) | (1) | 40
Net income attributable to Waste Management, Inc. | $ 335 | $ 302 | $ 287 | $ 258 | $ 273 | $ 335 | $ 274 | $ (129) | 1,182 | 753 | 1,298
Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Other income (expense): |  |  |  |  |  |  |  |  |  |  |
Equity in earnings of subsidiaries, net of tax provision |  |  |  |  |  |  |  |  | (2,748) | (2,534) | (2,580)
Total other income (expense) |  |  |  |  |  |  |  |  | (2,748) | (2,534) | (2,580)
Income before income taxes |  |  |  |  |  |  |  |  | (2,748) | (2,534) | (2,580)
Consolidated net income |  |  |  |  |  |  |  |  | (2,748) | (2,534) | (2,580)
Net income attributable to Waste Management, Inc. |  |  |  |  |  |  |  |  | (2,748) | (2,534) | (2,580)
WM [Member] |  |  |  |  |  |  |  |  |  |  |
Other income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | (303) | (298) | (351)
Loss on early extinguishment of debt |  |  |  |  |  |  |  |  | (1) | (500) |
Equity in earnings of subsidiaries, net of tax provision |  |  |  |  |  |  |  |  | 1,367 | 1,245 | 1,510
Total other income (expense) |  |  |  |  |  |  |  |  | 1,063 | 447 | 1,159
Income before income taxes |  |  |  |  |  |  |  |  | 1,063 | 447 | 1,159
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  | (119) | (306) | (139)
Consolidated net income |  |  |  |  |  |  |  |  | 1,182 | 753 | 1,298
Net income attributable to Waste Management, Inc. |  |  |  |  |  |  |  |  | 1,182 | 753 | 1,298
WM Holdings [Member] |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Costs and expenses |  |  |  |  |  |  |  |  |  | (1) | (459)
Income from operations |  |  |  |  |  |  |  |  |  | 1 | 459
Other income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | (20) | (22) | (31)
Loss on early extinguishment of debt |  |  |  |  |  |  |  |  |  | (52) |
Equity in earnings of subsidiaries, net of tax provision |  |  |  |  |  |  |  |  | 1,381 | 1,289 | 1,070
Total other income (expense) |  |  |  |  |  |  |  |  | 1,361 | 1,215 | 1,039
Income before income taxes |  |  |  |  |  |  |  |  | 1,361 | 1,216 | 1,498
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  | (8) | (29) | (12)
Consolidated net income |  |  |  |  |  |  |  |  | 1,369 | 1,245 | 1,510
Net income attributable to Waste Management, Inc. |  |  |  |  |  |  |  |  | 1,369 | 1,245 | 1,510
Non-Guarantor Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |
Condensed Income Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 13,609 | 12,961 | 13,996
Costs and expenses |  |  |  |  |  |  |  |  | 11,313 | 10,917 | 12,156
Income from operations |  |  |  |  |  |  |  |  | 2,296 | 2,044 | 1,840
Other income (expense): |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | (53) | (65) | (84)
Loss on early extinguishment of debt |  |  |  |  |  |  |  |  | (3) | (3) |
Other, net |  |  |  |  |  |  |  |  | (94) | (45) | (82)
Total other income (expense) |  |  |  |  |  |  |  |  | (150) | (113) | (166)
Income before income taxes |  |  |  |  |  |  |  |  | 2,146 | 1,931 | 1,674
Provision for (benefit from) income taxes |  |  |  |  |  |  |  |  | 769 | 643 | 564
Consolidated net income |  |  |  |  |  |  |  |  | 1,377 | 1,288 | 1,110
Less: Net income (loss) attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (2) | (1) | 40
Net income attributable to Waste Management, Inc. |  |  |  |  |  |  |  |  | $ 1,379 | $ 1,289 | $ 1,070

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