NOTES PAYABLE - Summary of Notes Payable (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Debt Instrument [Line Items]
Notes payable	$ 4,283		$ 4,352
8.50% senior notes due May 2019
Debt Instrument [Line Items]
Notes payable	850		850
6.45% senior notes due August 2040
Debt Instrument [Line Items]
Notes payable	448	[1]	448	[1]
6.90% senior notes due December 2039
Debt Instrument [Line Items]
Notes payable	396	[1]	396	[1]
3.45% senior notes due August 2015
Debt Instrument [Line Items]
Notes payable	300		300
2.65% senior notes due February 2017
Debt Instrument [Line Items]
Notes payable	656	[2]	657	[2]
4.00% senior notes due February 2022
Debt Instrument [Line Items]
Notes payable	349	[1]	349	[1]
5.50% subordinated notes due September 2052
Debt Instrument [Line Items]
Notes payable	500		500
2.26% yen-denominated Uridashi notes due September 2016
Debt Instrument [Line Items]
Notes payable	85		92
1.47% yen-denominated Samurai notes due July 2014
Debt Instrument [Line Items]
Notes payable	305		331
1.84% yen-denominated Samurai notes due July 2016
Debt Instrument [Line Items]
Notes payable	168		182
Variable interest rate yen-denominated Samurai notes due July 2014
Debt Instrument [Line Items]
Notes payable	59		64
3.60% yen-denominated loan due July 2015
Debt Instrument [Line Items]
Notes payable	107		116
3.00% yen-denominated loan due August 2015
Debt Instrument [Line Items]
Notes payable	53		58
Capitalized Lease Obligations
Debt Instrument [Line Items]
Notes payable	$ 7		$ 9

[1] Principal amount net of an underwriting discount that is being amortized over the life of the notes

[2] Principal amount plus an issuance premium that is being amortized over the life of the notes