XML 332 R78.htm IDEA: XBRL DOCUMENT
v3.25.4

Acquisitions - Acquisitions Completed in Prior Periods (Details) | 12 Months Ended
--- | ---
Dec. 31, 2025 acquistion | Dec. 31, 2024 acquistion letters_of_credit
Fair value of consideration transferred |  |
Number Of Business And Asset Acquisitions | 34 | 24
Number of Business Combinations | 4 |
Business Combination |  |
Fair value of consideration transferred |  |
Number of Business Combinations | letters_of_credit |  | 8
Asset Acquisitions |  |
Fair value of consideration transferred |  |
Number of Asset Acquisitions | 28 | 16

X
- Definition Number of Asset Acquisitions + References No definition available. + Details
Name: | lpla_NumberOfAssetAcquisitions
Namespace Prefix: | lpla_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Business And Asset Acquisitions + References No definition available. + Details
Name: | lpla_NumberOfBusinessAndAssetAcquisitions
Namespace Prefix: | lpla_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Business Combinations + References No definition available. + Details
Name: | lpla_NumberOfBusinessCombinations
Namespace Prefix: | lpla_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-5 + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=lpla_BusinessCombinationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetAcquisitionAxis=lpla_AssetAcquisitionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |