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Reclassification of AOCI to Earnings (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Jun. 30, 2012
Derivative instruments, gain (loss) recognized in AOCI, effective portion: |
Reclassify net losses on interest rate contracts from AOCI to earnings over the next twelve months | $ 18.4

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- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References No definition available. + Details
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