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Senior Notes	6 Months Ended
	Jun. 30, 2013
Debt Disclosure [Abstract]
Senior Notes	7. SENIOR NOTES In May 2013, the Company issued $300 million aggregate principal amount of 3.375% senior unsecured notes due May 2023. The Company expects to use the net proceeds to partially fund the Blackstone Acquisition (Note 2).

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- Definition

The entire disclosure for long-term debt.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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