Leases (Tables)

12 Months Ended

Dec. 31, 2011

Leases [Abstract]

Schedule of future minimum lease payments for operating and capital leases

Year Ended December 31,	Operating (1)		Capital
2012	$	176,403	$	8,386
2013		149,460		7,216
2014		122,763		6,710
2015		98,543		6,005
2016		70,087		5,630
Thereafter		176,599		57,472
Total minimum future payments	$	793,855	$	91,419
Less imputed interest				(43,058	)
				48,361
Less current portion				(4,008	)
Long-term capital lease obligations			$	44,353

(1) Minimum lease payments have not been reduced by minimum sublease rentals due in the future of $21.3 million.