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Debt (Interest Rate Swaps) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Notional Amount of Interest Rate Fair Value Hedge, Terminated | $ 750.0 | ||
| Original Maturity of Interest Rate Swaps Terminated, Date Range | Mar. 01, 2012 | ||
| Original Maturity of Interest Rate Swaps Terminated, Date Range End | Apr. 01, 2013 | ||
| Deferred Gain Loss On Discontinuation of Interest Rate Fair Value Hedge, Inception | 22.7 | ||
| Mark-to-market adjustments | 35.8 | 42.3 | |
| Reduction of interest expense | 31.5 | 30.3 | 26.1 |
| Deferred Gain (Loss) on Discontinuation of Interest Rate Fair Value Hedge | 15.8 | 0 | |
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Interest Rate Swaps [Member]
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| Principal amount of note | $ 250.0 | ||
| X | ||||||||||
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- Definition
Increase (decrease) in carrying amount of medium-term notes due to mark-to-market adjustments on interest rate swaps. No definition available.
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- Definition
Deferred Gain Loss On Discontinuation of Interest Rate Fair Value Hedge, Inception No definition available.
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- Definition
Effect of interest rate swaps change in interest expense. No definition available.
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- Definition
Notional Amount of Interest Rate Fair Value Hedge, Terminated during period. No definition available.
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- Definition
Original Maturity of Interest Rate Swaps Terminated, Date Range Begin No definition available.
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- Definition
Original Maturity of Interest Rate Swaps Terminated, Date Range End No definition available.
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- Definition
The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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