Concentration risk, number of customers.

No definition available.

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- Definition

Expected credit loss for receivables from contracts with customers.

+ References

No definition available.

+ Details

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- Definition

Expected credit loss on collateral held for receivables from clients.

+ References

No definition available.

+ Details

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- Definition

Minimum fair value of collateral as percentage of amortized cost.

+ References

No definition available.

+ Details

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- Definition

Partnership loans expected credit loss.

+ References

No definition available.

+ Details

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- Definition

Amount due from mutual funds, insurance companies and other for fees and charges arising from transactions related to the entity's brokerage activities and operations.

+ References

No definition available.

+ Details

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- Definition

Receivables and revenue.

+ References

No definition available.

+ Details

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- Definition

Revenue from contract with customer receivables.

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

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- Definition

Fair value as of the balance sheet date of customer securities accepted as collateral by the entity that it is permitted by contract or custom to sell or re-pledge to counterparties as collateral.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value of securities received as collateral against securities purchased under agreement to resell.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226013-175313

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- Details

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Receivables and Revenue - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 24, 2021 USD ($) Customer	Sep. 25, 2020 Customer	Sep. 24, 2021 USD ($) Customer	Sep. 25, 2020 Customer	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Receivables And Revenue [Line Items]
Collateral held for receivables from clients	$ 4,694,000,000		$ 4,694,000,000		$ 4,035,000,000
Collateral held for securities purchased under agreements to resell	$ 1,525,000,000		$ 1,525,000,000		1,743,000,000
Fair value of collateral as percentage of amortized cost	100.00%		100.00%
Expected credit loss on collateral held for receivables from clients	$ 0		$ 0		0
Expected credit loss on partnership loans	0		0		0
Receivable from clients balance	677,000,000		677,000,000		563,000,000	$ 470,000,000
Receivable from mutual fund, insurance companies and other	817,000,000		817,000,000		818,000,000
Expected credit loss for receivables from contracts with customers	$ 0		$ 0		0
Concentration risk, number of customers \| Customer	1	1	1	1
Customer Contracts [Member]
Receivables And Revenue [Line Items]
Receivable from mutual fund, insurance companies and other	$ 325,000,000		$ 325,000,000		$ 285,000,000	$ 291,000,000
Sales Revenue Net [Member] \| Customer [Member] \| Operating Segments [Member]
Receivables And Revenue [Line Items]
Concentration Risk, Percentage	13.00%	13.00%	12.00%	13.00%