DEBT - 2039 Senior Notes (Details) - 2039 Senior Notes, net	Sep. 30, 2009 USD ($)
Debt
Debt instrument principal amount	$ 1,100,000,000
Debt instrument, interest rate (as a percent)	6.25%

Face (par) amount of debt instrument at time of issuance.

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