NOTES PAYABLE - Additional Information (Detail) (Issuance of three series of Samurai notes) In Millions, unless otherwise specified	Jun. 30, 2011 Yen Denominated Variable Rate Samurai Notes Due In Three Years USD ($)	Jun. 30, 2011 Yen Denominated Variable Rate Samurai Notes Due In Three Years JPY (¥)	Jun. 30, 2011 Yen Denominated Samurai Notes JPY (¥)	Jun. 30, 2011 Yen Denominated Samurai Notes 1.47 Percent Due In Three Year USD ($)	Jun. 30, 2011 Yen Denominated Samurai Notes 1.47 Percent Due In Three Year JPY (¥)	Jun. 30, 2011 Yen Denominated Samurai Notes 1.84 Percent Due In Five Year USD ($)	Jun. 30, 2011 Yen Denominated Samurai Notes 1.84 Percent Due In Five Year JPY (¥)
Debt Instrument [Line Items]
Notes payable, principal amount	$ 68.0	¥ 5,500.0	¥ 50,000.0	$ 356.0	¥ 28,700.0	$ 196.0	¥ 15,800.0
Notes payable, fixed interest rate	1.475%	1.475%
Notes payable, fixed interest rate				1.47%	1.47%	1.84%	1.84%