Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Amortization period for gains and losses, period 1		3 years
Amortization period for gains and losses, period 2		5 years
Loss Contingency, Loss in Period		$ 0.0	$ 0.0	$ 18.2
Postemployment benefits liability			$ 9.2
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Weighted average discount rate		2.15%	3.06%
Rate of return on assets		5.29%
Minimum | U.S. Pension and Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Expected contributions related to continuing operations		$ 5.0
Minimum | International Pension and Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Expected contributions related to continuing operations		0.0
Maximum | U.S. Pension and Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Expected contributions related to continuing operations		10.0
Maximum | International Pension and Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Expected contributions related to continuing operations		5.0
Discontinued Operations | U.S. Qualified Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan liabilities					$ 499.6
Divestiture					355.9
Discontinued Operations | United States Postretirement Benefit Plan of US Entity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan liabilities					$ 60.4
Non-U.S. Plans | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Qualified pension plans, benefit obligations		685.9	$ 617.0	714.2
Qualified pension plans, plan assets		$ 695.4	$ 615.8	$ 705.4
Weighted average discount rate		2.05%	2.91%
Rate of return on assets		5.27%	5.20%	5.09%
U.S. | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Qualified pension plans, benefit obligations		$ 71.7	$ 74.7	$ 88.9
Qualified pension plans, plan assets		$ 63.3	$ 62.7	$ 63.1
Weighted average discount rate		3.16%	4.24%
Rate of return on assets		5.50%	5.50%	5.50%
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Loss Contingency, Loss in Period	$ 18.2
UK Defined Contribution Plan
Defined Benefit Plan Disclosure [Line Items]
Employer match toward contributions, doubled		5.00%
Maximum contribution percent of eligible compensation		10.00%
Employer contribution		$ 7.5	$ 5.9	$ 6.7
Personal Savings Account Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contribution		$ 1.3	2.2	$ 2.6
Maximum employee contribution to plan		25.00%
Maximum contribution for eligible participants		3.00%
Employer match toward contributions, fifty cents for dollar, minimum		4.00%
Employer match toward contributions, fifty cents for dollar, maximum		6.00%
Retirement Savings Account Plan
Defined Benefit Plan Disclosure [Line Items]
Employer match toward contributions, fifty cents for dollar, minimum		3.00%
Employer match toward contributions, fifty cents for dollar, maximum		6.00%
Vesting period		3 years
U.S. Qualified Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Qualified pension plans, benefit obligations		$ 64.1	65.4
Qualified pension plans, plan assets		63.3	62.7
UK Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Qualified pension plans, benefit obligations		482.8	416.5
Qualified pension plans, plan assets		$ 582.1	$ 501.7
Rate of return on assets		5.20%
UK Pension Plan | Liability Driven Investments
Defined Benefit Plan Disclosure [Line Items]
Liability driven investments allocation		80.00%
UK Pension Plan | Corporate and Government Bonds
Defined Benefit Plan Disclosure [Line Items]
Corporate and government bonds and mortgage-backed securities allocation		5.00%
UK Pension Plan | Equity Securities, Emerging Market Debt and High Yield Securities
Defined Benefit Plan Disclosure [Line Items]
Equity securities allocation		15.00%