Business Combination - Preliminary valuation and amortization period of intangible assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Business Acquisition [Line Items]
Acquired intangible assets, total	$ 705.6
Fair value of real property	101.1
Fair value of personal property	141.8
Contractual or Distributer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, amount	91.1
Amortization period of intangible assets	15 years
Developed Technology Rights [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, amount	87.1
Amortization period of intangible assets	10 years
Database Rights [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, amount	3.9
Amortization period of intangible assets	5 years
Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived intangible asset, amount	2.3
Amortization period of intangible assets	5 years
Trade Names [Member]
Business Acquisition [Line Items]
Indefinite-lived intangible asset, amount	$ 521.2
Minimum [Member]
Business Acquisition [Line Items]
Amortization period of intangible assets	5 years
Maximum [Member]
Business Acquisition [Line Items]
Amortization period of intangible assets	15 years