v2.4.0.8

Carrying Value and Fair Value of Blackstone Issued Notes (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified		9 Months Ended
	Dec. 31, 2012	Sep. 30, 2013 6.625% Notes	Sep. 30, 2013 5.875% Notes	Sep. 30, 2013 4.750% Notes	Sep. 30, 2013 6.250% Notes
Debt Instrument [Line Items]
Debt instrument, interest rate		6.625%	5.875%	4.75%	6.25%
Debt instrument, maturity date		Aug. 15, 2019	Mar. 15, 2021	Feb. 15, 2023	Aug. 15, 2042
Senior Notes	$ 600	$ 600	$ 400	$ 400	$ 250
Notes acquired not retired	$ 15

X

- Definition

Notes Acquired but not Retired.

+ References

No definition available.

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X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Publisher SEC

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X

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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