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CONSOLIDATED CONDENSED STATEMENT OF SHAREHOLDERS' EQUITY (Parenthetical) (USD $)
0 Months Ended 3 Months Ended
Dec. 02, 2014
Sep. 03, 2014
Dec. 31, 2014
Dec. 31, 2013
Consolidated Statements of Shareholders' Equity        
Dividends declared (in dollars per share) $ 0.6875us-gaap_CommonStockDividendsPerShareDeclared $ 0.6875us-gaap_CommonStockDividendsPerShareDeclared $ 0.6875us-gaap_CommonStockDividendsPerShareDeclared $ 0.6250us-gaap_CommonStockDividendsPerShareDeclared