Goodwill and Other Intangible Assets, Net (Tables)

6 Months Ended

Jun. 30, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of the activity and balances in goodwill accounts, net, by operating segment

A summary of the activity and balances in goodwill accounts by reporting segment is as follows:

	Balance at December 31, 2011		Acquisitions		Divestitures			Adjustments to Acquisitions			Balance at June 30, 2012
Eastern	$	2,798.0	$	14.0	$	(3.9	)	$	(0.3	)	$	2,807.8
Midwestern	2,135.5		0.6		—			(0.6		)	2,135.5
Southern	2,705.0		—		—			(0.3		)	2,704.7
Western	3,008.5		21.4		—			(0.3		)	3,029.6
Total	$	10,647.0	$	36.0	$	(3.9	)	$	(1.5	)	$	10,677.6
	Balance at December 31, 2010		Acquisitions		Divestitures			Adjustments  to Acquisitions			Balance at June 30, 2011
Eastern	$	2,791.9	$	3.6	$	(0.7	)	$	(0.5	)	$	2,794.3
Midwestern	2,129.6		4.8		—			—			2,134.4
Southern	2,721.8		2.4		(19.5		)	(0.4		)	2,704.3
Western	3,012.0		—		(4.3		)	(0.5		)	3,007.2
Total	$	10,655.3	$	10.8	$	(24.5	)	$	(1.4	)	$	10,640.2

Summary of the activity and balances by intangible asset type

A summary of the activity and balances by intangible asset type is as follows:

	Gross Intangible Assets						Accumulated Amortization									Net Intangibles at June 30, 2012
	Balance at December 31, 2011		Acquisitions		Balance at June 30, 2012		Balance at December 31, 2011			Additions Charged to Expense			Balance at June 30, 2012
Customer relationships, franchise and other municipal agreements	$	566.2	$	10.5	$	576.7	$	(194.4	)	$	(29.6	)	$	(224.0	)	$	352.7
Trade names	30.0		—		30.0		(18.5		)	(3.1		)	(21.6		)	8.4
Non-compete agreements	16.9		2.5		19.4		(9.3		)	(1.3		)	(10.6		)	8.8
Other intangible assets	62.9		0.7		63.6		(44.2		)	(0.7		)	(44.9		)	18.7
Total	$	676.0	$	13.7	$	689.7	$	(266.4	)	$	(34.7	)	$	(301.1	)	$	388.6
	Gross Intangible Assets						Accumulated Amortization									Net Intangibles at June 30, 2011
	Balance at December 31, 2010		Acquisitions		Balance at June 30, 2011		Balance at December 31, 2010			Additions Charged to Expense			Balance at June 30, 2011
Customer relationships, franchise and other municipal agreements	$	537.1	$	21.6	$	558.7	$	(130.7	)	$	(31.2	)	$	(161.9	)	$	396.8
Trade names	30.0		—		30.0		(12.5		)	(3.0		)	(15.5		)	14.5
Non-compete agreements	12.9		2.9		15.8		(7.2		)	(0.9		)	(8.1		)	7.7
Other intangibles assets	62.9		—		62.9		(41.2		)	(1.5		)	(42.7		)	20.2
Total	$	642.9	$	24.5	$	667.4	$	(191.6	)	$	(36.6	)	$	(228.2	)	$	439.2