Fair Value Measurements - Defined Benefit Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 229.5	$ 235.8	$ 265.6
Non-U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	393.8	395.1	$ 395.6
Fair Value, Measurements, Recurring [Member] | U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	229.5	235.8
Fair Value, Measurements, Recurring [Member] | U.S. Plans: | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	65.6	51.2
Fair Value, Measurements, Recurring [Member] | U.S. Plans: | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.5	0.5
Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	393.8	395.1
Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans: | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	87.1	82.9
Fixed Income Securities [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	113.8	117.4
Fixed Income Securities [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	183.4	181.0
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	94.2	94.2
Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	190.8	194.7
Real estate and other | Fair Value, Measurements, Recurring [Member] | U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	21.5	24.2
Real estate and other | Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	19.6	19.4
Market Approach Valuation Technique [Member] | Fixed Income Securities [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Plans: | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	15.3	14.3
Market Approach Valuation Technique [Member] | Fixed Income Securities [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans: | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets
Market Approach Valuation Technique [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Plans: | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	37.2	36.9
Market Approach Valuation Technique [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans: | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	87.1	82.9
Market Approach Valuation Technique [Member] | Real estate and other | Fair Value, Measurements, Recurring [Member] | U.S. Plans: | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	13.1
Market Approach Valuation Technique [Member] | Real estate and other | Fair Value, Measurements, Recurring [Member] | U.S. Plans: | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.5	0.5
Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	163.4	184.1
Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	306.7	312.2
Net Asset Value [Member] | Fixed Income Securities [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	98.5	103.1
Net Asset Value [Member] | Fixed Income Securities [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	183.4	181.0
Net Asset Value [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	57.0	57.3
Net Asset Value [Member] | Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	103.7	111.8
Net Asset Value [Member] | Real estate and other | Fair Value, Measurements, Recurring [Member] | U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	7.9	23.7
Net Asset Value [Member] | Real estate and other | Fair Value, Measurements, Recurring [Member] | Non-U.S. Plans:
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 19.6	$ 19.4