|
Carrying Value and Fair Value of Blackstone Issued Notes (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2013
6.625% Notes
|
Dec. 31, 2012
6.625% Notes
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Aug. 20, 2009
6.625% Notes
|
Dec. 31, 2013
5.875% Notes
|
Sep. 15, 2010
5.875% Notes
|
Dec. 31, 2013
4.750% Notes
|
Aug. 17, 2012
4.750% Notes
|
Dec. 31, 2013
6.250% Notes
|
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| Debt Instrument [Line Items] | |||||||||||||||||||||
| Debt instrument, interest rate | 1.78% | 1.86% | 6.625% | 5.875% | 4.75% | 6.25% | |||||||||||||||
| Debt instrument, maturity date | Aug. 15, 2019 | [1],[2] | Mar. 15, 2021 | [1],[3] | Feb. 15, 2023 | [1],[4] | Aug. 15, 2042 | ||||||||||||||
| Senior Notes | $ 600 | $ 600 | $ 600 | $ 400 | $ 400 | $ 400 | $ 400 | $ 250 | |||||||||||||
| Notes acquired not retired | $ 15 | $ 15 | |||||||||||||||||||
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