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Other Comprehensive Income (Loss) and Related Tax Effects (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Other comprehensive income, tax (expense) benefit
Cumulative foreign currency translation losses	$ 27.8	$ 32.1
Tax effects on foreign currency translation adjustments	0
Tax effects on unrealized gains or losses on available-for-sale securities	$ 0

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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