Income Taxes (Income from Continuing Operations before Taxes) (Details) - USD ($) $ in Millions	3 Months Ended											12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2016	Mar. 31, 2016	[1]	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
United States												$ (147.6)	$ (403.0)		$ (230.3)
Foreign												268.3	434.2		253.0
Income from continuing operations, before taxes	$ 91.6	$ 48.0	$ (12.2)	$ (6.7)	$ 42.8		$ 74.6		$ 71.9	$ (158.1)		$ 120.7	$ 31.2	[1]	$ 22.7

[1] (Loss) income from continuing operations, before taxes during 2016 was impacted by:•the deconsolidation of our Venezuelan operations. As a result of the change to the cost method of accounting, in the first quarter of 2016 we recorded a loss of $120.5 in other expense, net. The loss was comprised of $39.2 in net assets of the Venezuelan business and $81.3 in accumulated foreign currency translation adjustments within AOCI associated with foreign currency movements before Venezuela was accounted for as a highly inflationary economy;•a gain on extinguishment of debt of $3.9 before and after tax in the third quarter caused by the deferred gain associated with interest-rate swap agreement terminations, partially offset by the early tender premium paid, the deferred loss associated with treasury lock agreements, deal costs and the write-off of debt issuance costs and discounts associated with the cash tender offers in August 2016;•a loss on extinguishment of debt of $1.0 before and after tax in the fourth quarter caused by the premium paid for the repurchases, the write-off of debt issuance costs and discounts and the deferred loss associated with treasury lock agreements, partially offset by the deferred gain associated with interest-rate swap agreement terminations associated with the debt repurchases in October 2016;•a loss on extinguishment of debt of $2.9 before and after tax in the fourth quarter caused by the make-whole premium, the deferred loss associated with treasury lock agreements and the write-off of debt issuance costs and discounts and partially offset by the deferred gain associated with interest-rate swap agreement terminations associated with the prepayment of the remaining principal amount of the 4.20% Notes (as defined in Note 7, Debt and Other Financing) and 5.75% Notes (as defined in Note 7, Debt and Other Financing); and•a gain on extinguishment of debt of $1.1 before and after tax in the fourth quarter consisting of the discount received for the repurchases, partially offset by the write-off of debt issuance costs and discounts associated with the debt repurchases in December 2016.