Employee Benefit Plans (Textuals) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 15, 2019	Apr. 03, 2019
Defined Benefit Plan Disclosure [Line Items]
Transfer of pension plan asset to life insurance company						$ 73.5	$ 100.0
transfer of pension plan obligation to Life Insurance company	$ 77.9		$ 77.9				$ 105.6
non-cash pension settlement loss	(38.6)	$ (60.6)	99.2	$ 0.4	$ 0.0
Reclassification pension benefit obligations to AOCL	4.4	$ 5.6
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated prior service (cost) credits	0.2		0.2
Estimated actuarial gains (losses)	$ 5.4		$ 5.4
Long-term rate of return on assets assumption (as a percent)			6.50%	6.50%	7.50%
Discount rate (as a percent)	3.19%		3.19%	4.32%
Fixed Income, Money Market, Cash and Guaranteed Investment Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Target (as a percent)	50.00%		50.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target (as a percent)	50.00%		50.00%
International Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Target (as a percent)	6.00%		6.00%
U.S. Equity [Member]
Defined Benefit Plan Disclosure [Line Items]
Target (as a percent)	44.00%		44.00%
UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation (as a percent)			81.00%
Plan assets (as a percent)			74.00%
Components of fair value in our plan assets			74.00%
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Long-term rate of return on assets assumption (as a percent)			3.92%	4.19%	4.40%
Discount rate (as a percent)	2.15%		2.15%	2.93%
UNITED KINGDOM
Defined Benefit Plan Disclosure [Line Items]
Components of fair value in our plan assets			14.00%
Canada [Member]
Defined Benefit Plan Disclosure [Line Items]
Components of fair value in our plan assets			12.00%