|
Net Income Per Common Unit - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
9 Months Ended | 1 Months Ended |
|---|---|---|
|
Sep. 30, 2013
|
Jan. 31, 2008
Blackstone
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Amount authorized to repurchase under unit repurchase program | $ 500 | |
| Amount remaining available for repurchases | $ 335.8 |