Business Disposition - Schedule of Condensed Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
ASSETS
Current assets	$ 876.0	$ 896.2
Restricted cash	20.9	19.6
Property and equipment, net	674.6	665.7
LIABILITIES
Current maturities of long-term debt	9.4	9.5
Long-term debt	971.4	951.0
Contran \| Trade Accounts Payables
LIABILITIES
Payable to affiliates	27.4	26.1
Waste Management
ASSETS
Current assets	8.2	10.1
Operating permits	47.2	48.1
Restricted cash	17.6	16.2
Property and equipment, net	147.2	150.0
LIABILITIES
Current maturities of long-term debt	4.8	4.9
Long-term debt	70.4	71.4
Accrued noncurrent closure and post closure costs	27.9	27.4
Waste Management \| Contran \| Trade Accounts Payables
LIABILITIES
Payable to affiliates	$ 27.4	$ 26.1

The estimated amount of costs required as of the balance sheet date to comply with regulatory requirements pertaining to the retirement of a waste management facility, which will be paid after one year or beyond the normal operating cycle, if longer.

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