Consolidating Financial Information of Guarantors and Issuers (Details 2) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities
Cash flows provided by/(used in) operating activities	$ 71.7	$ 82.1
Cash flows from investing activities
Acquisitions of property and equipment, net of change in construction payables	(192.2)	(89.7)
Change in restricted cash	100.7	(546.0)
Payments to acquire business, net of transaction costs and cash acquired	15.2	(31.1)
Other	(8.9)	(81.5)
Cash flows (used in)/provided by investing activities	(100.4)	(748.3)
Cash flows from financing activities
Proceeds from the issuance of long-term debt	1,710.1	863.8
Debt issuance costs and fees	(31.9)	(17.5)
Borrowings under lending agreements	453.0	135.0
Repayments under lending agreements	(608.0)	(135.0)
Cash paid for early extinguishments of debt	(1,450.6)	(125.9)
Proceeds from sale of non-controlling interest in a subsidiary	32.2
Other	(12.3)	(31.7)
Cash flows (used in)/provided by financing activities	92.5	688.7
Cash flows from discontinued operations
Cash flows from operating activities	29.0	33.0
Cash flows from investing activities	(2.3)	(2.0)
Net cash provided by discontinued operations	26.7	31.0
Net (decrease)/increase in cash and cash equivalents	90.5	53.5
Cash and cash equivalents, beginning of period	894.6	973.5
Cash and cash equivalents, end of period	985.1	1,027.0
CEC (Parent) [Member]
Cash flows from operating activities
Cash flows provided by/(used in) operating activities	175.5	107.2
Cash flows from investing activities
Purchase of additional interests in subsidiaries	(127.7)	(108.5)
Other	(0.8)
Cash flows (used in)/provided by investing activities	(128.5)	(108.5)
Cash flows from financing activities
Net intercompany financing activities	(60.3)	(82.0)
Other	17.4	(0.9)
Cash flows (used in)/provided by financing activities	42.9	(82.9)
Cash flows from discontinued operations
Net (decrease)/increase in cash and cash equivalents	4.1	(84.2)
Cash and cash equivalents, beginning of period	3.9	136.0
Cash and cash equivalents, end of period	8.0	51.8
Subsidiary Issuer [Member]
Cash flows from operating activities
Cash flows provided by/(used in) operating activities	(137.9)	(226.9)
Cash flows from investing activities
Acquisitions of property and equipment, net of change in construction payables	(3.0)	(7.1)
Purchase of additional interests in subsidiaries	(13.9)	(89.6)
Cash flows (used in)/provided by investing activities	(16.9)	(96.7)
Cash flows from financing activities
Proceeds from the issuance of long-term debt	1,351.6	418.3
Debt issuance costs and fees	(24.7)	(3.2)
Borrowings under lending agreements	453.0	135.0
Repayments under lending agreements	(608.0)	(135.0)
Cash paid for early extinguishments of debt	(1,095.6)
Net intercompany financing activities	176.3	31.2
Other	(7.6)	(13.4)
Cash flows (used in)/provided by financing activities	245.0	432.9
Cash flows from discontinued operations
Net (decrease)/increase in cash and cash equivalents	90.2	109.3
Cash and cash equivalents, beginning of period	16.6	61.0
Cash and cash equivalents, end of period	106.8	170.3
Guarantor [Member]
Cash flows from operating activities
Cash flows provided by/(used in) operating activities	(99.7)	(24.0)
Cash flows from investing activities
Acquisitions of property and equipment, net of change in construction payables	(66.0)	(49.8)
Purchase of additional interests in subsidiaries		(15.6)
Return of investment in subsidiary	92.5
Other	(5.6)	(3.9)
Cash flows (used in)/provided by investing activities	20.9	(69.3)
Cash flows from financing activities
Cash paid for early extinguishments of debt		(0.7)
Net intercompany financing activities	0.1	15.6
Other	(18.3)	(3.3)
Cash flows (used in)/provided by financing activities	(18.2)	11.6
Cash flows from discontinued operations
Cash flows from operating activities	29.0	33.0
Cash flows from investing activities	(2.3)	(2.0)
Net cash provided by discontinued operations	26.7	31.0
Net (decrease)/increase in cash and cash equivalents	(70.3)	(50.7)
Cash and cash equivalents, beginning of period	372.5	344.7
Cash and cash equivalents, end of period	302.2	294.0
Non-Guarantor [Member]
Cash flows from operating activities
Cash flows provided by/(used in) operating activities	133.8	225.8
Cash flows from investing activities
Acquisitions of property and equipment, net of change in construction payables	(123.2)	(32.8)
Change in restricted cash	100.7	(546.0)
Payments to acquire business, net of transaction costs and cash acquired		(31.1)
Other	(2.5)	(77.6)
Cash flows (used in)/provided by investing activities	(25.0)	(687.5)
Cash flows from financing activities
Proceeds from the issuance of long-term debt	358.5	445.5
Debt issuance costs and fees	(7.2)	(14.3)
Cash paid for early extinguishments of debt	(355.0)	(125.2)
Proceeds from sale of non-controlling interest in a subsidiary	32.2
Net intercompany financing activities	(67.0)	248.9
Other	(3.8)	(14.1)
Cash flows (used in)/provided by financing activities	(42.3)	540.8
Cash flows from discontinued operations
Net (decrease)/increase in cash and cash equivalents	66.5	79.1
Cash and cash equivalents, beginning of period	501.6	431.8
Cash and cash equivalents, end of period	568.1	510.9
Consolidating/Eliminating Adjustments [Member]
Cash flows from investing activities
Purchase of additional interests in subsidiaries	141.6	213.7
Return of investment in subsidiary	(92.5)
Cash flows (used in)/provided by investing activities	49.1	213.7
Cash flows from financing activities
Net intercompany financing activities	(49.1)	(213.7)
Cash flows (used in)/provided by financing activities	$ (49.1)	$ (213.7)