Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Goodwill [Line Items]
Goodwill, currency translation losses			$ 18,500,000	$ 4,700,000
Goodwill, additions from new business combinations			0	134,200,000
Amortization expense, intangible assets	$ 6,900,000	$ 6,600,000	21,500,000	17,000,000
Earn-Out Arrangements [Member]
Goodwill [Line Items]
Goodwill, accruals of acquisition-related contingent consideration			$ 800,000	$ 4,600,000