LONG-TERM DEBT (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011
Notes Due 2011 [Member]
Long-term debt [Line Items]
Extinguishment Of Debt Amount	$ 250
Interest rate of notes issued	5.30%
Notes Due 2016 [Member]
Long-term debt [Line Items]
Interest rate of notes issued	1.50%
Notes issued under WKSI Registration Statement	$ 250

Including both current and noncurrent portions, carrying amount as of the balance-sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

Name:	us-gaap_OtherLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant