Fair Value Measurement (Narrative) (Details) (USD $)	3 Months Ended			12 Months Ended									3 Months Ended	12 Months Ended					3 Months Ended				3 Months Ended		12 Months Ended	3 Months Ended		12 Months Ended		12 Months Ended		3 Months Ended		12 Months Ended	3 Months Ended	12 Months Ended
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-lived assets held and used, Impairment charge							$ 14,700,000	$ 2,200,000	$ 20,200,000
Assets held and used, long lived, gross							83,500,000	5,200,000	24,200,000
Long-lived assets held and used, Fair value measurement										68,800,000	3,000,000	4,000,000
Long-lived assets held for sale or disposal, Impairment charge							34,300,000	2,200,000	5,000,000
Assets held for sale, long lived, gross							47,100,000	5,700,000	11,100,000
Long-lived assets held for sale or disposal, Fair value measurement										12,800,000	3,600,000	6,500,000
Costs to sell					100,000	400,000
Goodwill, Impairment charge	392,300,000	61,000,000	128,500,000	392,300,000	61,000,000	128,500,000	392,300,000	61,000,000	128,500,000				99,900,000	61,000,000					62,200,000				59,800,000		128,500,000	170,400,000
Goodwill	2,222,100,000	2,526,800,000	2,333,300,000	2,222,100,000	2,526,800,000	2,333,300,000		102,700,000	184,900,000				7,400,000		99,900,000	163,700,000		257,500,000		62,200,000		55,300,000		59,800,000			170,400,000
Goodwill, Fair value measurement											102,700,000	184,200,000		102,700,000			163,700,000				20,600,000
Goodwill, Net book value	2,222,100,000	2,526,800,000	2,333,300,000	2,222,100,000	2,526,800,000	2,333,300,000		102,700,000	184,900,000				7,400,000		99,900,000	163,700,000		257,500,000		62,200,000		55,300,000		59,800,000			170,400,000
Finite-lived intangible assets	572,200,000	756,900,000		572,200,000	756,900,000		2,100,000																						3,200,000	550,800,000	724,500,000	12,200,000	89,700,000		26,900,000	43,000,000	32,600,000
Other intangible assets, Fair value measurement										2,200,000																			2,200,000					0	0
Other intangible assets, Impairment charge							$ 90,700,000	$ 26,900,000																				$ 1,000,000		$ 90,700,000		$ 90,700,000		$ 89,700,000	$ 26,900,000	$ 26,900,000