ÐÇ¿Õ´«Ã½

Quarterly report pursuant to Section 13 or 15(d)

Fair Value Of Financial Instruments (Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation) (Details)

v2.4.0.6
Fair Value Of Financial Instruments (Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Fair Value Of Financial Instruments [Abstract] Ìý Ìý
Beginning balance - January 1 $ 157.9 $ 45.6
Total gains Ìý Ìý
Included in earnings 43.3 44.6
Settlements (132.0) (22.1)
Ending balance - March 31 69.2 68.1
Total gains for the period included in earnings attributable to the change in unrealized gains on assets still held at the reporting date $ 43.3 $ 44.6