Subsequent Event (Details) (SIHI Group B.V.) In Millions, unless otherwise specified	12 Months Ended	0 Months Ended
	Dec. 31, 2014 EUR (€)	Jan. 07, 2015 Subsequent Event USD ($)	Jan. 07, 2015 Subsequent Event
Subsequent Event [Line Items]
Percent of business acquired			100.00%
Acquisition, purchase price		$ 365.0
Business Combination, Cash Consideration Transferred		110
Business Combination, Consideration Transferred from borrowed sources		255
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period	€ 270