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OTHER COMPREHENSIVE INCOME ITEMS (Details 3) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Apr. 30, 2014
Apr. 30, 2013
Other Comprehensive Income (Loss), Before Tax        
Net unrealized gain on retirement benefits adjustment $ 60.2 $ 126.8 $ 138.0 $ 239.0
Cumulative translation adjustment 106.7 (58.3) (62.6) (45.2)
Net unrealized gain (loss) on derivatives (0.9) 2.9 3.6 8.7
Net unrealized gain on investments 3.7 3.6 1.6 0.2
Total other comprehensive income (loss), before tax amount 169.7 75.0 80.6 202.7
Other Comprehensive Income (Loss), Tax (Expense) Credit        
Net unrealized gain on retirement benefits adjustment (22.6) (45.8) (50.3) (87.9)
Cumulative translation adjustment (0.2) (1.5) 1.1 5.6
Net unrealized gain (loss) on derivatives 0.3 (0.9) (1.3) (2.9)
Net unrealized gain on investments (1.3) (1.3) (0.5)  
Total other comprehensive income (loss), tax (expense) credit (23.8) (49.5) (51.0) (85.2)
Other comprehensive income (loss), net of tax        
Net unrealized gain on retirement benefits adjustment 37.6 81.0 87.7 151.1
Cumulative translation adjustment 106.5 (59.8) (61.5) (39.6)
Net unrealized gain (loss) on derivatives (0.6) 2.0 2.3 5.8
Net unrealized gain on investments 2.4 2.3 1.1 0.2
Other Comprehensive Income (Loss), Net of Income Taxes 145.9 25.5 29.6 117.5
Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interests        
Comprehensive income (loss) attributable to noncontrolling interests 0.5 0.1 0.7 0.1
Net income (loss) attributable to noncontrolling interests $ 0.5 $ 0.1 $ 0.7 $ 0.1