Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Summary Of Gain Or Loss On Effective Swaps Recognized In Other Comprehensive Income) (Details)

v2.3.0.15
Derivative Instruments (Summary Of Gain Or Loss On Effective Swaps Recognized In Other Comprehensive Income) (Details) (Interest Rate Swap [Member], USD $)
In Millions
3 Months Ended 9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Interest Rate Swap [Member]
       
Change in other comprehensive income (loss) $ 0.5   $ 1.3 $ (0.1)