Income Taxes Change in Valuation Allowances (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Summary of Valuation Allowances
Deferred Tax Assets, Valuation Allowance	$ 275.1	$ 332.2	$ 467.3	$ 392.9
(Reversed) charged to costs and expenses	(20.8)	(72.8)	65.2
(Reversed) charged to gross tax assets and other accounts	(36.3)	(62.3)	$ 9.2
Operating Loss Carryforwards	1,127.7
Deferred Tax Liabilities, Undistributed Foreign Earnings	2,592.4	$ 2,214.2
Foreign Tax Authority
Summary of Valuation Allowances
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration	984.2
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	143.5
State and Local Jurisdiction [Member]
Summary of Valuation Allowances
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 56.7
Minimum | Foreign Tax Authority
Summary of Valuation Allowances
Operating Loss Carryforwards, Expiration Date	Jan. 01, 2016
Maximum | Foreign Tax Authority
Summary of Valuation Allowances
Operating Loss Carryforwards, Expiration Date	Jan. 01, 2035
Maximum | State and Local Jurisdiction [Member]
Summary of Valuation Allowances
Operating Loss Carryforwards, Expiration Date	Jan. 01, 2035