Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of other intangible assets

Other intangible assets were as follows at December 31, 2012 and 2011:

	Weighted Average Amortization Lives	2012						2011
		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Management contract rights	20 years	$	550.0	$	339.2	$	210.8	$	550.0	$	311.6	$	238.4
Customer relationship lists	20 years		115.8		34.5		81.3		115.8		27.0		88.8
Computer software	3 years		478.7		453.4		25.3		459.0		434.8		24.2
Total intangible assets		$	1,144.5	$	827.1	$	317.4	$	1,124.8	$	773.4	$	351.4

Schedule of estimated amortization expense of intangible assets

Amortization expense related to intangible assets was $53.7, $59.8 and $64.5 for the years ended December 31, 2012, 2011 and 2010, respectively. The estimated amortization of intangible assets are as follows:

Year	Amount
2013	$	47.2
2014		42.6
2015		39.9
2016		38.0
2017		36.5
Thereafter		115.0
	$	319.2