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Acquisitions and Divestitures - Schedule of Final Allocations of Purchase Price (Detail) - USD ($) $ in Millions | Jan. 08, 2016 | Mar. 26, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | --- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Amount |  |  | $ 212 | $ 145 | $ 9
Non-compete Covenant [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Amount |  |  | 23 | 8 | $ 2
Trade Name [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Amount |  |  | $ 4 | $ 6 |
Deffenbaugh Disposal, Inc. [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Amount |  | $ 100 |  |  |
Total other intangible assets subject to amortization, Weighted Average Amortization Periods |  | 15 years |  |  |
Deffenbaugh Disposal, Inc. [Member] | Customer Relationships [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Amount |  | $ 94 |  |  |
Total other intangible assets subject to amortization, Weighted Average Amortization Periods |  | 15 years |  |  |
Deffenbaugh Disposal, Inc. [Member] | Non-compete Covenant [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Weighted Average Amortization Periods |  | 0 years |  |  |
Deffenbaugh Disposal, Inc. [Member] | Trade Name [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Amount |  | $ 6 |  |  |
Total other intangible assets subject to amortization, Weighted Average Amortization Periods |  | 15 years |  |  |
Southern Waste Systems [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Amount | $ 182 |  |  |  |
Total other intangible assets subject to amortization, Weighted Average Amortization Periods | 9 years 6 months |  |  |  |
Southern Waste Systems [Member] | Customer Relationships [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Amount | $ 160 |  |  |  |
Total other intangible assets subject to amortization, Weighted Average Amortization Periods | 10 years |  |  |  |
Southern Waste Systems [Member] | Non-compete Covenant [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Amount | $ 18 |  |  |  |
Total other intangible assets subject to amortization, Weighted Average Amortization Periods | 5 years |  |  |  |
Southern Waste Systems [Member] | Trade Name [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Total other intangible assets subject to amortization, Amount | $ 4 |  |  |  |
Total other intangible assets subject to amortization, Weighted Average Amortization Periods | 10 years |  |  |  |

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