Goodwill and Intangible Assets, Identifiable Intangible Table (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Identifiable intangible assets
Net book value	$ 32.1us-gaap_FiniteLivedIntangibleAssetsNet	$ 33.7us-gaap_FiniteLivedIntangibleAssetsNet
Customer relationships
Identifiable intangible assets
Original cost	38.5	38.5
Accumulated amortization	(6.4)	(4.8)
Net book value	$ 32.1	$ 33.7

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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

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