Employee Benefit Plans - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) pension_plan	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of qualified defined benefit plans | pension_plan	1
Net decrease in pension obligations	$ 100.0
Discount rate	4.00%		4.60%
Other comprehensive income (loss) transferred	$ (78.0)	$ 78.0
Other comprehensive income loss, tax	$ 45.0
Pension
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.20%	3.80%	4.60%
Settlement Payment Amount			$ 3.0
Effect of Plan Amendment on Benefit Obligation			$ 2.8
Expected long-term return on plan assets, percent	7.70%	8.50%	8.50%
Pension | Income from Discontinued Operations, net
Defined Benefit Plan Disclosure [Line Items]
Recognized Loss Due to Settlements, Net of Tax			$ 0.5