Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Effective income tax rate	33.80%	31.70%	33.10%	27.70%
Federal statutory tax rate			35.00%
Tax credit carryforwards					$ 19.5
Liability for uncertain tax positions	$ 2.8		$ 2.8		1.4
Continuing Operations
Operating Loss Carryforwards [Line Items]
Liability for uncertain tax positions	1.6		1.6		0.3
Unrecognized tax positions to be released in the next 12 months	0.1		0.1
Discontinued Operations
Operating Loss Carryforwards [Line Items]
Liability for uncertain tax positions	1.2		1.2		1.1
Unrecognized tax positions to be released in the next 12 months	$ 1.2		$ 1.2
Foreign Income Tax Credit | Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Tax credit carryforwards					$ 9.2
Tax credit carryforward expiration period			10 years
Tax credit carryforward expiration year			2020