Annual report pursuant to Section 13 and 15(d)

Carrying Value of Debt Obligations (Detail)

v2.4.0.6
Carrying Value of Debt Obligations (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Commercial paper
Dec. 31, 2010
Commercial paper
Jan. 31, 2008
4.50% senior notes
Dec. 31, 2011
4.50% senior notes
Dec. 31, 2010
4.50% senior notes
Mar. 31, 2009
3.875% senior notes
Dec. 31, 2011
3.875% senior notes
Dec. 31, 2010
3.875% senior notes
Jan. 31, 2008
5.50% senior notes
Dec. 31, 2011
5.50% senior notes
Dec. 31, 2010
5.50% senior notes
Mar. 31, 2009
5.125% senior notes
Dec. 31, 2011
5.125% senior notes
Dec. 31, 2010
5.125% senior notes
Jan. 31, 1998
8.375% debentures Due 2020
Dec. 31, 2011
8.375% debentures Due 2020
Dec. 31, 2010
8.375% debentures Due 2020
Nov. 30, 2010
3.125% senior notes
Dec. 31, 2011
3.125% senior notes
Dec. 31, 2010
3.125% senior notes
Dec. 31, 2011
8.375% debentures Due 2030
Dec. 31, 2010
8.375% debentures Due 2030
Jan. 31, 2008
6.20% senior notes
Dec. 31, 2011
6.20% senior notes
Dec. 31, 2010
6.20% senior notes
Nov. 30, 2010
4.875% senior notes
Dec. 31, 2011
4.875% senior notes
Dec. 31, 2010
4.875% senior notes
Dec. 31, 2011
Floating rate senior notes
Dec. 31, 2010
Floating rate senior notes
Dec. 31, 2009
Floating rate senior notes
Dec. 31, 2011
Capital lease obligations
Dec. 31, 2010
Capital lease obligations
Dec. 31, 2011
Facility notes and bonds
Dec. 31, 2010
Facility notes and bonds
Dec. 31, 2011
Pound Sterling notes
Dec. 31, 2010
Pound Sterling notes
Dec. 31, 2011
Other debt
Dec. 31, 2010
Other debt
Debt Instrument [Line Items]                                                                                  
Maturity - Minimum Date     2012                                                       2049 2049 2049 2012   2015   2031   2012  
Maturity - Maximum Date     2012                                                       2053 2053 2053 3004   2036   2050   2012  
Maturity         Jan. 15, 2013 Jan. 15, 2013   Apr. 15, 2014 Apr. 15, 2014   Jan. 15, 2018 Jan. 15, 2018   Apr. 15, 2019 Apr. 15, 2019   Apr. 01, 2020 Apr. 01, 2020   Jan. 15, 2021 Jan. 15, 2021   Apr. 01, 2030   Jan. 15, 2038 Jan. 15, 2038   Nov. 15, 2040 Nov. 15, 2040                        
Total debt $ 11,128 $ 10,846   $ 341   $ 1,778 $ 1,815   $ 1,050 $ 1,061   $ 841 $ 795   $ 1,119 $ 1,032   $ 504 $ 453   $ 1,641 $ 1,464 $ 284 $ 284   $ 1,480 $ 1,480   $ 489 $ 488 $ 376 $ 386   $ 469 $ 160 $ 320 $ 320 $ 777 $ 764   $ 3
Less current maturities (33) (355)                                                                              
Long-term debt $ 11,095 $ 10,491