Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments and Contingencies [Abstract]

Future minimum payments under non-cancelable leases, sublease commitments and related party

The future minimum payments under non-cancelable leases, sublease commitments and related payments we are obligated to make, net of sublease commitments of third party lessees to make payments to us, as of December 31, 2011 are as follows:

	Payments		Sublease Receipts		Net Payments
	(in millions)
2012	$	148.2	$	13.0	$	135.2
2013		148.9		14.2		134.7
2014		149.7		13.7		136.0
2015		151.6		13.4		138.2
2016		151.5		14.1		137.4
2017 and thereafter		1,336.1		42.5		1,293.6
Total future minimum payments	$	2,086.0	$	110.9	$	1,975.1