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Consolidated Statements Of Changes In Common Stock Equity (USD $)
In Millions
Common Equity [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2008 $ 102.7 $ 36.8 $ 139.5
Net Income   10.0 10.0
Dividends   (13.2) (13.2)
Shares Issued Under Stock Plans 0.4   0.4
Issuance of Common Shares 0.9   0.9
Issuance of Common Shares 55.5   55.5
Balance at Dec. 31, 2009 159.5 33.6 193.1
Net Income   9.6 9.6
Dividends   (15.0) (15.0)
Shares Issued Under Stock Plans 0.4   0.4
Issuance of Common Shares 0.9   0.9
Balance at Dec. 31, 2010 160.8 28.2 189.0
Net Income   16.4 16.4
Dividends   (15.2) (15.2)
Shares Issued Under Stock Plans 0.5   0.5
Issuance of Common Shares 1.0   1.0
Balance at Dec. 31, 2011 $ 162.3 $ 29.4 $ 191.7