Business Acquisitions and Restructuring Charges (Details) (Acquired various solid waste businesses [Member], USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Acquired various solid waste businesses [Member]
Purchase price:
Cash used in acquisitions, net of cash acquired	$ 28.5	$ 71.8
Holdbacks	3.4	0.2
Total	31.9	72.0
Allocated as follows:
Working capital	0.9	2.3
Property and equipment	8.1	22.7
Other liabilities, net	(1.8)	(2.7)
Value of assets acquired and liabilities assumed	7.2	22.3
Excess purchase price to be allocated	24.7	49.7
Excess purchase price allocated as follows:
Other intangible assets	4.1	13.7
Goodwill	20.6	36.0
Total allocated	$ 24.7	$ 49.7