Employee Benefits - Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Reduction in pension obligation	$ 354.8	$ 354.8
Other Postemployment Benefit Obligation
Defined Benefit Plan Disclosure [Line Items]
Reduction in pension obligation	35.0	35.0
Curtailment gain	19.7	19.7
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	1.6	98.5
Selling, General and Administrative Expenses | Other Postemployment Benefit Obligation
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	3.3	3.3
Cost of Sales | Other Postemployment Benefit Obligation
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	$ 16.4	$ 16.4