Quarterly report pursuant to Section 13 or 15(d)

Carrying Value of Outstanding Debt (Detail)

 v2.3.0.11
Carrying Value of Outstanding Debt (Detail) (USD $)
In Millions
6 Months Ended
Jun. 30, 2011
Dec. 31, 2010
Debt Instrument [Line Items]    
Total debt $ 12,161 $ 10,846
Less current maturities (1,374) (355)
Long-term debt 10,787 10,491
Commercial paper
   
Debt Instrument [Line Items]    
Maturity - Minimum Date 2011  
Maturity - Maximum Date 2011  
Total debt 1,355 341
4.50% senior notes
   
Debt Instrument [Line Items]    
Maturity Jan. 15, 2013  
Total debt 1,812 1,815
3.875% senior notes
   
Debt Instrument [Line Items]    
Maturity Apr. 15, 2014  
Total debt 1,062 1,061
5.50% senior notes
   
Debt Instrument [Line Items]    
Maturity Jan. 15, 2018  
Total debt 811 795
5.125% senior notes
   
Debt Instrument [Line Items]    
Maturity Apr. 15, 2019  
Total debt 1,051 1,032
3.125% senior notes
   
Debt Instrument [Line Items]    
Maturity Jan. 15, 2021  
Total debt 1,523 1,464
6.20% senior notes
   
Debt Instrument [Line Items]    
Maturity Jan. 15, 2038  
Total debt 1,480 1,480
4.875% senior notes
   
Debt Instrument [Line Items]    
Maturity Nov. 15, 2040  
Total debt 488 488
8.375% debentures
   
Debt Instrument [Line Items]    
Maturity - Minimum Date 2020  
Maturity - Maximum Date 2030  
Total debt 756 737
Floating rate senior notes
   
Debt Instrument [Line Items]    
Maturity - Minimum Date 2049  
Maturity - Maximum Date 2053  
Total debt 380 386
Facility notes and bonds
   
Debt Instrument [Line Items]    
Maturity - Minimum Date 2015  
Maturity - Maximum Date 2036  
Total debt 320 320
Pound Sterling notes
   
Debt Instrument [Line Items]    
Maturity - Minimum Date 2031  
Maturity - Maximum Date 2050  
Total debt 795 764
Capital lease obligations
   
Debt Instrument [Line Items]    
Maturity - Minimum Date 2025  
Maturity - Maximum Date 2033  
Total debt 324 160
Other debt
   
Debt Instrument [Line Items]    
Maturity - Minimum Date 2011  
Maturity - Maximum Date 2012  
Total debt $ 4 $ 3