Acquisition (Details) (USD $) In Millions	6 Months Ended
Jun. 30, 2011	Jan. 14, 2011
Acquisition (Textuals) [Abstract]
The total consideration for the acquisition		$ 143.3
Recorded goodwill in connection with acquisition		42.0
Recorded intangible assets in connection with acquisition	33.9
Amount of goodwill deductible for tax purposes		42
Trade Names [Member]
Acquired Indefinite Lived Intangible Assets (Textual) [Abstract]
Trade names		5.0
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets (Textuals) [Abstract]
Customer Relationship		26.7
Minimum Life of intangible Asset	11 years
Maximum Life of intangible Asset	12 years
Other Intangibles [Member]
Acquired Finite-Lived Intangible Assets (Textuals) [Abstract]
Customer Relationship		$ 2.2
Minimum Life of intangible Asset	1 year
Maximum Life of intangible Asset	8 years

Acquired Finite-Lived Intangible Assets.

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Acquired Indefinite Lived Intangible Asset Textual Abstract.

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Acquisition Textuals Abstract.

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Finite Lived Intangible Asset Useful Life Maximum.

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Finite Lived Intangible Asset Useful Life Minimum.

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51
-Subparagraph d

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 52

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51
-Subparagraph e

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

+ References

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 52
-Subparagraph c

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 53
-Subparagraph d

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph k

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Description of identifiable intangible asset (an asset that lacks physical substance, but not a financial asset) acquired in a business combination. Does not include goodwill.

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will not be amortized. Does not include goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51
-Subparagraph e

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 52
-Subparagraph b

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