Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net earnings available to common stockholders	$ 97.2us-gaap_ProfitLoss	$ 70.9us-gaap_ProfitLoss
Other comprehensive (loss) income, net of taxes:
Recognition of deferred pension items, net of taxes of $(5.2) for 2015 and $0.3 for 2014	17.3	1.8
Unrealized losses on derivative instruments, net of taxes of $5.1 for 2015 and $0.8 for 2014	(6.0)	(1.7)
Foreign currency translation adjustments	(72.8)	2.4
Other comprehensive (loss) income, net of taxes	(61.5)	2.5
Comprehensive income, net of taxes	$ 35.7us-gaap_ComprehensiveIncomeNetOfTax	$ 73.4us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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