DERIVATIVE INSTRUMENTS - Additional Information (Detail)	Mar. 31, 2012 Y currency	Dec. 31, 2011 Cash flow hedges Dedesignated USD ($)	Mar. 31, 2012 Variable interest rate yen-denominated Samurai notes due July 2014 JPY (¥)	Dec. 31, 2011 Variable interest rate yen-denominated Samurai notes due July 2014 JPY (¥)	Jul. 31, 2011 Variable interest rate yen-denominated Samurai notes due July 2014 JPY (¥)	Mar. 31, 2012 2.65% senior notes due February 2017 USD ($)	Mar. 31, 2012 2.65% senior notes due February 2017 JPY (¥)	Mar. 31, 2012 4.00% senior notes due February 2022 USD ($)	Mar. 31, 2012 4.00% senior notes due February 2022 JPY (¥)
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Number of currencies related to foreign currency swaps	2
Hedging activity, weighted-average period (in years)	14
Notes payable, principal amount			¥ 5,500,000,000	¥ 5,500,000,000	¥ 5,500,000,000	$ 400,000,000		$ 350,000,000
Notes payable, effective principal amount							30,900,000,000		27,000,000,000
Debt Instrument, Interest Rate, Stated Percentage			1.35%	1.34%		2.65%	2.65%	4.00%	4.00%
Notes payable, effective interest rate					1.475%	1.22%	1.22%	2.07%	2.07%
Foreign currency swaps used in cash flow hedging, notional amount of swaps de-designated		$ 500,000,000