Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Pension Plans (Defined Benefit Plans Narrative) (Details)

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Pension Plans (Defined Benefit Plans Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dutch Defined Benefit Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Acturial gain (loss) of pension obligations, net of tax recognized in AOCI $ 0.1 $ (0.2) $ 1.6
Discount rate 2.00% 2.40% 2.40%
Defined beneft plans liability $ 2.2 $ 3.2  
Irish Defined Benefit Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Acturial gain (loss) of pension obligations, net of tax recognized in AOCI $ (1.6) $ 0.5 $ (3.1)
Discount rate 2.00% 2.50% 2.40%
Defined beneft plans liability $ 9.1 $ 6.9