Commitments and Contingencies - Future Minimum Payments Under Non-Cancelable Leases, Sublease Commitments and Related Payments (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Payments
2024	$ 108,380
2025	42,695
2026	40,568
2027	37,973
2028	31,698
2029 and thereafter	132,647
Total lease payments	393,961
Real Estate
Payments
2024	104,400
2025	64,600
2026	60,900
2027	56,600
2028	49,600
2029 and thereafter	458,900
Total lease payments	795,000
Sublease Receipts
2024	(31,000)
2025	300
2026	(200)
2027	0
2028	0
2029 and thereafter	0
Total future minimum payments	(30,900)
Net Payments
2024	73,400
2025	64,900
2026	60,700
2027	56,600
2028	49,600
2029 and thereafter	458,900
Total future minimum payments	$ 764,100

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Due After Year Five

No definition available.

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Due Year Five

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Due Year Four

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Due Year Three

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Due Year Two

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Liability, Payments, Net Of Sublease Income, Remainder Of Fiscal Year

+ References

No definition available.

+ Details

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- Definition

Lessor, Operating Lease, Payment to be Received (Refunded), Year Two

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

The total of net future contractually required payments on leases defined as operating.

+ References

No definition available.

+ Details

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Namespace Prefix:	ablp_
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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-6

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
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- Definition

Amount of lease payments to be received by lessor for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479773/842-30-50-12

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease payment to be received by lessor for operating lease in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Period Type:	instant

- Definition

Amount of lease payment to be received by lessor for operating lease in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease payment to be received by lessor for operating lease in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease payment to be received by lessor for operating lease after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lease payment to be received by lessor for operating lease in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- References

No definition available.

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