DERIVATIVE INSTRUMENTS - Additional Information (Detail) In Millions, unless otherwise specified	Jun. 30, 2011 Year	Jun. 30, 2011 Issuance of three series of Samurai notes Yen Denominated Variable Rate Samurai Notes Due In Three Years USD ($)	Jun. 30, 2011 Issuance of three series of Samurai notes Yen Denominated Variable Rate Samurai Notes Due In Three Years JPY (¥)	Jun. 30, 2011 Variable interest rate yen-denominated Uridashi notes due September 2011 JPY (¥)	Dec. 31, 2010 Variable interest rate yen-denominated Uridashi notes due September 2011 JPY (¥)
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedging activity, weighted-average period (in years)	25
Notes payable, principal amount		$ 68.0	¥ 5,500.0	¥ 20,000.0	¥ 20,000.0
Notes payable, effective interest rate		1.475%	1.475%	1.52%

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 21
-Paragraph 16, 20
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant