XML 127 R112.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items] |  |
Period of Cash Flow Projections on Financial Budgets | 5 years | 5 years
Period of Cash Flow | 5 years |
Trade Names [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 20 years |
Intangible Assets, Current | $ 117,818 | $ 92,542
Cash Flow Growth Rate | 1.56% |
Trade Names [Member] | Fashion and Luxury Media Advertising and Marketing Services Segment [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Current | $ 92,379 | 92,216
Archived Images [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible Assets, Current | $ 499 | $ 500
Developed Technology Rights [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Asset, Useful Life | 7 years |

X
- Definition Cash flow growth rate. + References No definition available. + Details
Name: | amtd_CashFlowGrowthRate
Namespace Prefix: | amtd_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period of cash flow. + References No definition available. + Details
Name: | amtd_PeriodOfCashFlow
Namespace Prefix: | amtd_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of cash flow projections on financial budgets. + References No definition available. + Details
Name: | amtd_PeriodOfCashFlowProjectionsOnFinancialBudgets
Namespace Prefix: | amtd_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483154/926-20-50-5 + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The current portion of nonphysical assets, excluding financial assets, if these assets are classified into the current and noncurrent portions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 10 -SubTopic 20 -Topic 205 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483475/205-20-45-10 + Details
Name: | us-gaap_IntangibleAssetsCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TradeNamesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=amtd_FashionandLuxuryMediaAdvertisingandMarketingServicesSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=amtd_ArchivedImagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_DevelopedTechnologyRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |