XML 59 R11.htm IDEA: XBRL DOCUMENT v2.4.0.6
Depreciation and Amortization Expense
 3 Months Ended
Mar. 31, 2012
Depreciation and Amortization Expense [Abstract]  
Depreciation and Amortization Expense Disclosure Note D: Depreciation and Amortization Expense Disclosure
D. Depreciation and amortization expense was $55 million and $75 million (including accelerated depreciation of $7 million and $19 million for the three months ended March 31, 2012 and 2011.