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Consolidated Statement of Comprehensive Income Parentheticals (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Consolidated Statement of Comprehensive Income Parentheticals [Abstract]
Unrealized Gain on Securities, Tax	$ 0	$ 0.7
Unrealized Gain (Loss) on Derivatives, Tax	0	(0.1)
Defined Benefit Pension and Other Postretirement Benefit Plans, Tax	$ 0.2	$ 0.3

Tax effect of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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- Definition

Tax effect of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities.

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