Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Goodwill [Line Items]
Goodwill, currency translation gains (losses)	$ 3,500,000	$ (12,200,000)
Goodwill, additions from new business combinations	0	0
Amortization expense, intangible assets	5,300,000	7,300,000
Earn-Out Arrangements [Member]
Goodwill [Line Items]
Goodwill, accruals of acquisition-related contingent consideration	0	$ 0
Goodwill Accumulated Impairment Losses [Member]
Goodwill [Line Items]
Goodwill, currency translation gains (losses)	(3,700,000)
Goodwill Gross Carrying Amount [Member]
Goodwill [Line Items]
Goodwill, currency translation gains (losses)	$ 7,200,000