Offsetting Assets and Liabilities - Schedule of Partnership's Securities Purchased Under Agreement to Resell (Detail) - USD ($) $ in Millions	Mar. 28, 2025	Dec. 31, 2024
Offsetting Securities Purchased under Agreements to Resell [Abstract]
Securities purchased under agreements to resell, Gross amounts of recognized assets	$ 984	$ 1,390
Securities purchased under agreements to resell, Gross amounts offset in the Consolidated Statements of Financial Condition	0	0
Securities purchased under agreements to resell, Net amounts presented in the Consolidated Statements of Financial Condition	984	1,390
Securities purchased under agreements to resell, Gross amounts not offset in the Consolidated Statements of Financial Condition, Financial instruments	0	0
Securities purchased under agreements to resell, Gross amounts not offset in the Consolidated Statements of Financial Condition, Securities collateral	(984)	(1,390)
Securities purchased under agreements to resell, Net amount	$ 0	$ 0

Securities purchased under agreements to resell gross amounts offset.

No definition available.

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- Definition

Amount of obligation to return financial instruments collateral under master netting arrangements that have not been offset against securities purchased under agreement to resell.

+ References

No definition available.

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- References

No definition available.

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- Definition

Amount, after the effects of master netting arrangements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price. Includes purchases of participations in pools of securities that are subject to a resale agreement, assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 860
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147483466/210-20-50-3

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-URI https://asc.fasb.org/1943274/2147483444/210-20-55-10

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-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

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- Definition

Amount, after effect of master netting arrangement and deduction of obligation to return financial collateral not offset and financial instrument subject to master netting arrangement not offset, of fund outstanding loaned in form of security resale agreement for purchase and resale of identical or substantially same security at date certain for specified price. Includes security purchased under agreement to resell not subject to master netting arrangement or similar agreement.

+ References

+ Details

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- Definition

Amount of obligation to return securities collateral under master netting arrangements that have not been offset against securities purchased under agreement to resell.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount, before effects of master netting arrangements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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-Name Accounting Standards Codification
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