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Other Noncurrent Assets - Other Noncurrent Assets (Detail) - USD ($) $ in Millions | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Other noncurrent assets: |  |
Land held for development | $ 127.1 | $ 138.1
Restricted cash | 37.0 | 24.2
IBNR receivables | 7.2 | 7.1
Capital lease deposit | 6.2 | 6.2
Pension asset | 2.2 | 1.6
Other | 14.6 | 17.9
Total | $ 194.3 | 238.0
Waste Management | Capitalized Operating Permits |  |
Other noncurrent assets: |  |
Waste disposal site operating permits, net |  | $ 42.9

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