Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Effective income tax rate (percent)	23.10%	20.70%	23.90%
Effective income tax rate, increase (decrease) from prior year (percent)	2.40%	(3.20%)
Provisional estimate of deferred taxes for foreign withholding taxes, Tax Reform Act	$ 3.0	$ 3.0
Accumulated undistributed earnings from foreign subsidiaries	240.5
Foreign earnings repatriated	45.8
Unrecognized tax benefits included in current liabilities	10.8	6.6
Unrecognized tax benefits included in non-current liabilities	3.0	7.1
Unrecognized tax benefits, period increase (decrease)	4.0
Result of tax position taken during period	1.1
Increase in income tax expense	1.1
Reductions resulting from settlements and lapse of statute of limitations	4.5
Decrease of unrecognized tax benefits relating to settlements with tax authorities	2.1
Reductions resulting from settlements and lapse statute of limitations, tax effect	1.9
Decreases relating to settlements with tax authorities	3.8	2.5
Reductions as a result of lapse of the applicable statute of limitations	0.7	5.2
Gross unrecognized tax benefits	12.6	13.1	$ 18.7
Unrecognized tax benefits that would impact effective tax rate	12.6
Decrease in income tax expense upon recognition of gross unrecognized tax benefits	12.4
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	21.4	10.6
Operating loss carryforwards, not subject to valuation allowances	11.7	2.0
Subject to Expiration Date [Member] | Domestic Tax Authority [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	0.8	1.0
Subject to Expiration Date [Member] | Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 6.8	$ 5.5