Income Taxes Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Reserves for discontinued operations, environmental and restructuring		$ 132.8	$ 111.1
Accrued pension and other postretirement benefits		64.3	70.4
Alternative minimum, foreign tax and other credit carryforwards		25.8	7.4
Net operating loss carryforwards		161.1	143.0
Deferred expenditures capitalized for tax		24.2	34.2
Other		190.8	266.2
Deferred tax assets		599.0	632.3
Valuation allowance, net	[1]	(272.5)	(125.3)
Deferred tax assets, net of valuation allowance		326.5	507.0
Property, plant and equipment, net		212.8	138.2
Deferred tax liabilities		212.8	138.2
Net deferred tax assets		113.7	$ 368.8
Valuation allowance for operating loss carryforwards [Member]
Valuation Allowance [Line Items]
Net increase (decrease) in the valuation allowance for deferred tax assets		$ 106.5

[1] The change in the net valuation allowance was principally related to operations within our Agricultural Solutions business in Brazil driven by unfavorable market conditions and currency impacts experienced in the latter half of 2015.