Employee Benefits - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Reduction in pension obligation		$ 354.8
Lump Sum Pension Payment Or Annuity
Defined Benefit Plan Disclosure [Line Items]
Benefits Paid		$ 328.4
Selling, General and Administrative Expenses
Defined Benefit Plan Disclosure [Line Items]
Pension and other post retirement non-cash settlement expense	$ 96.9