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Other Noncurrent Assets - Other Noncurrent Assets (Detail) - USD ($) $ in Millions | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Other noncurrent assets: |  |
Land held for development | $ 136.7 | $ 138.1
Restricted cash | 35.2 | 24.2
IBNR receivables | 7.4 | 7.1
Capital lease deposit | 6.2 | 6.2
Pension asset | 1.7 | 1.6
Other | 16.7 | 17.9
Total | 246.3 | 238.0
Waste Management |  |
Other noncurrent assets: |  |
Restricted cash | 23.0 | 21.6
Waste Management | Capitalized Operating Permits |  |
Other noncurrent assets: |  |
Waste disposal site operating permits, net | $ 42.4 | $ 42.9

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