Goodwill and Other Intangible Assets (Details 2) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Components of amortized intangible assets
Gross Carrying Amount	$ 334.3		$ 334.3
Accumulated Amortization	(138.3)		(133.1)
Amortization expense for intangible assets	11.8	13.9
Estimated amortization expense
Remainder of fiscal year	3.8
2014	15.0
2015	15.0
2016	14.9
2017	14.8
2018	14.6
Contract based
Components of amortized intangible assets
Gross Carrying Amount	26.0		21.0
Accumulated Amortization	(14.2)		(13.8)
Technology based
Components of amortized intangible assets
Gross Carrying Amount	82.7		91.3
Accumulated Amortization	(39.8)		(40.8)
Marketing related
Components of amortized intangible assets
Gross Carrying Amount	23.7		24.9
Accumulated Amortization	(14.3)		(14.4)
Customer based
Components of amortized intangible assets
Gross Carrying Amount	201.9		197.1
Accumulated Amortization	$ (70.0)		$ (64.1)

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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