XML 82 R72.htm IDEA: XBRL DOCUMENT
v3.20.2

Fair Value Measurements and Financial Instruments - Additional Information (Detail) - Kronos Worldwide, Inc. - 3.75% Senior Secured Notes due September 15, 2025 - Kronos International, Inc | Jun. 30, 2020 EUR (€)
--- | ---
Financial Instrument At Fair Value [Line Items] |
Estimated market price of the notes | € 984
Principal amount of debt instrument | € 1,000

X
- Definition The market price or dollar value of a bond traded in open markets, reflecting any premium or discount to par value. + References No definition available. + Details
Name: | vhi_BondMarketPrice
Namespace Prefix: | vhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The nominal value (par value) or dollar value of a bond paid to the holder at maturity. + References No definition available. + Details
Name: | vhi_BondParValue
Namespace Prefix: | vhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Financial instrument at fair value. + References No definition available. + Details
Name: | vhi_FinancialInstrumentAtFairValueLineItems
Namespace Prefix: | vhi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=vhi_KronosMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=vhi_ThreePointSevenFivePercentageSeniorSecuredNotesDueSeptemberTwoThousandTwentyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=vhi_KronosInternationalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |