Income Taxes Narrative (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Valuation Allowance [Line Items]
Net deferred tax liabilities	$ 246.6	$ 246.6	$ 114.5
Valuation allowance	26.7	$ 26.7	$ 18.6
Statutory federal income tax rate		35.00%	35.00%	35.00%
Operating loss carryforwards	178.0	$ 178.0
Operating loss carryforward tax benefit	57.0	57.0
Operating loss carryforwards tax benefit valuation allowance	10.0	10.0
Valuation allowance increase		8.0
Income taxes paid	149.0
Reserve for environmental matters	9.0	9.0
Unrecognized tax benefits, gross	28.6	28.6	$ 169.9	$ 167.2	$ 146.8
Unrecognized tax benefits, net	35.0	35.0	168.0
Indirect tax benefits	7.0	7.0	41.0
Income tax interest and penalties	13.0	13.0	39.0
Potential income tax interest and penalties			8.0	$ 8.0
Foreign earnings reinvested indefinitely	941.0	941.0
Domestic Tax Authority [Member]
Valuation Allowance [Line Items]
Net deferred tax liabilities	293.0	293.0	166.0
Valuation allowance	16.0	16.0	3.0
Operating loss carryforwards	102.0	102.0
Foreign Tax Authority [Member]
Valuation Allowance [Line Items]
Net deferred tax assets	46.0	46.0	51.0
Valuation allowance	11.0	11.0	$ 16.0
Operating loss carryforwards	76.0	76.0
Separation Related
Valuation Allowance [Line Items]
Valuation allowance	$ 16.0	$ 16.0