Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Mar. 03, 2014
Business Acquisition, Transaction Costs								$ 14.7
Payments to Acquire Businesses, Net of Cash Acquired	$ 802.6			$ 0.0	$ (804.5)
Goodwill, net		$ 840.1		840.1			$ 850.7	$ 276.5
Intangible assets, net		340.7		340.7			$ 361.7
Amortization		7.0	$ 6.9	14.0	10.3	$ 27.5
Asset Impairment Charges		0.0	$ (1.6)	0.0	$ (1.6)
Software [Member]
Intangible assets, net		4.7		$ 4.7
Weighted average depreciation period				1 year
Trademarks [Member]
Intangible assets, net		10.8		$ 10.8
Intangible assets, useful life				4 years
Customer Relationships And Other Intangibles [Member]
Intangible assets, net		$ 325.2		$ 325.2
Other Intangible Assets [Member]
Weighted average amortization period				15 years
Minimum [Member] | Software [Member]
Intangible assets, useful life				8 years
Minimum [Member] | Customer Relationships And Other Intangibles [Member]
Intangible assets, useful life				1 year
Maximum [Member] | Software [Member]
Intangible assets, useful life				10 years
Maximum [Member] | Trademarks [Member]
Intangible assets, useful life				4 years
Maximum [Member] | Customer Relationships And Other Intangibles [Member]
Intangible assets, useful life				17 years