v2.4.0.6

Business Acquisitions and Restructuring Charges (Details) (Acquired various solid waste businesses [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Acquired various solid waste businesses [Member]
Purchase price:
Cash used in acquisitions, net of cash acquired	$ 10.2	$ 19.7
Holdbacks	1.0	0
Total	11.2	19.7
Allocated as follows:
Working capital	0.2	(0.9)
Property and equipment	2.4	4.4
Other liabilities, net	(0.4)	0
Value of assets acquired and liabilities assumed	2.2	3.5
Excess purchase price to be allocated	9.0	16.2
Excess purchase price allocated as follows:
Other intangible assets	1.0	5.8
Goodwill	8.0	10.4
Total allocated	$ 9.0	$ 16.2

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