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Pension And Other Postretirement Benefit Plans
9 Months Ended
Dec. 31, 2011
Pension And Other Postretirement Benefit Plans [Abstract]  
Pension And Other Postretirement Benefit Plans

9. Pension and Other Postretirement Benefit Plans

     Net periodic expense for the Company's defined pension and other postretirement benefit plans was $10 million and $31 million for the quarter and nine months ended December 31, 2011 and $11 million and $29 million for the quarter and nine months ended December 31, 2010. Cash contributions to these plans were $18 million and $15 million for the first nine months of 2012 and 2011.