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Pension and Other Postretirement Benefits
6 Months Ended
Mar. 31, 2012
Pension Disclosure [Abstract]  
Pension and Other Postretirement Benefits

NOTE 6. PENSION BENEFITS

Net periodic benefit costs for the Company under its defined benefit pension plans consist of the following:

               
               
  Quarter Ended   Six Months Ended  
Net Periodic Benefit Costs March 31,  March 31,  
(in millions) 2012 2011  2012  2011  
Service cost $ 8 $ 7 $ 16 $ 14  
Interest cost   12   11   24   22  
Expected return on plan assets   (9)   (9)   (18)   (18)  
Recognized actuarial loss   5   3   9   6  
               
Net periodic benefit costs $ 16 $ 12 $ 31 $ 24