CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
REVENUE	$ 656,896	$ 632,803	$ 1,957,853	$ 1,866,441
COST OF SERVICES	307,699	284,406	906,687	832,229
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	231,905	216,450	698,133	660,707
OPERATING INCOME	117,292	131,947	353,033	373,505
OTHER INCOME (EXPENSE):
Interest expense, net of interest income of $76, $54, $260 and $271	(71,861)	(67,342)	(194,548)	(203,485)
Other	(9,792)	(4,314)	(8,753)	1,498
Other expense	(81,653)	(71,656)	(203,301)	(201,987)
INCOME BEFORE INCOME TAX EXPENSE	35,639	60,291	149,732	171,518
INCOME TAX EXPENSE	13,543	22,944	56,898	65,213
NET INCOME	$ 22,096	$ 37,347	$ 92,834	$ 106,305
EARNINGS (LOSS) PER COMMON SHARE:
Basic Class L	$ 0.04	$ (0.12)	$ 0.19	$ (0.36)
Diluted Class L	$ 0.04	$ (0.12)	$ 0.18	$ (0.36)
Cash dividends declared per share	$ 1.00		$ 1.00
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING:
Basic Class L Shares	491,611	87,865	491,109	87,926
Class L Common Stock
EARNINGS (LOSS) PER COMMON SHARE:
Basic Class L		$ 4.81		$ 13.78
Diluted Class L		$ 4.62		$ 13.22
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING:
Basic Class L Shares		9,975		9,983
Diluted Class L Shares		10,403		10,408
Common Class A [Member]
EARNINGS (LOSS) PER COMMON SHARE:
Basic Class L	$ 0.04	$ (0.12)	$ 0.19	$ (0.36)
Diluted Class L	$ 0.04	$ (0.12)	$ 0.18	$ (0.36)
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING:
Basic Class L Shares	16,633		17,034
Diluted Class L Shares	508,244	87,865	508,143	87,926