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Changes in Partnership's Intangible Assets, Net (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]      
Balance, Beginning of Year $ 284,384 $ 347,955 $ 397,508
Amortization Expense (67,097) (74,871) (71,053)
Acquisitions [1] 0 11,300 21,500
Balance, End of Year $ 217,287 $ 284,384 $ 347,955
[1] In December 2020, Blackstone acquired DCI, a San Francisco based systematic credit investment firm. Provisional amounts of Intangible Assets and Goodwill for the acquisition of DCI were reported for the year ended December 31, 2020, which resulted in a $21.5 million increase in Intangible Assets. During the year ended December 31, 2021, Blackstone obtained additional information needed to identify and measure the acquired assets, which resulted in a $11.3 million increase in Intangible Assets. Intangible Assets related to the DCI acquisition are primarily comprised of contractual rights to earn future fee income.