XML 66 R55.htm IDEA: XBRL DOCUMENT
v3.25.3

DEBT AND EQUITY SECURITIES - Schedule of Net Gains (Losses) and Interest Income from Marketable Securities Held to Fund Operating Programs (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Unrealized gains (losses), net |  |  |  |
Net gains (losses) and interest income from marketable securities held to fund rabbi trusts | $ 20 | $ (5) | $ 36 | $ 19
Revenues for reimbursed costs | 10 | (3) | 17 | 8
Other income (loss), net (Note 19) | 2 | 6 | 7 | 7
Other comprehensive income (loss) (Note 14) | 2 | 15 | 13 | 9
Realized gains, net |  |  |  |
Net gains (losses) and interest income from marketable securities held to fund rabbi trusts | 2 | 23 | 5 | 27
Revenues for reimbursed costs | 1 | 11 | 3 | 13
Other income (loss), net | $ 1 | $ 0 | $ 1 | $ 0

X
- Definition Marketable Securities Held To Fund Operating Programs, Realized Gains + References No definition available. + Details
Name: | h_MarketableSecuritiesHeldToFundOperatingProgramsRealizedGains
Namespace Prefix: | h_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Marketable Securities Held To Fund Operating Programs, Realized Gains (Loss) + References No definition available. + Details
Name: | h_MarketableSecuritiesHeldToFundOperatingProgramsRealizedGainsLossAbstract
Namespace Prefix: | h_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Marketable Securities Held to Fund Operating Programs, Realized Gains (Losses) Other Income (Loss) Net + References No definition available. + Details
Name: | h_MarketableSecuritiesHeldToFundOperatingProgramsRealizedGainsLossesOtherIncomeLossNet
Namespace Prefix: | h_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Marketable Securities Held To Fund Operating Programs Revenues For Reimbursement Of Costs Incurred + References No definition available. + Details
Name: | h_MarketableSecuritiesHeldToFundOperatingProgramsRevenuesForReimbursementOfCostsIncurred
Namespace Prefix: | h_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Marketable Securities Held To Fund Operating Programs, Revenues For Reimbursement Of Costs Incurred Realized gains + References No definition available. + Details
Name: | h_MarketableSecuritiesHeldToFundOperatingProgramsRevenuesForReimbursementOfCostsIncurredRealizedGains
Namespace Prefix: | h_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Marketable Securities Held To Fund Operating Programs, Unrealized Gain (Loss), Other Income (Loss) + References No definition available. + Details
Name: | h_MarketableSecuritiesHeldToFundOperatingProgramsUnrealizedGainLossOtherIncomeLoss
Namespace Prefix: | h_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Marketable Securities Held To Fund Operating Programs, Unrealized Gains (Loss) + References No definition available. + Details
Name: | h_MarketableSecuritiesHeldToFundOperatingProgramsUnrealizedGainsLossAbstract
Namespace Prefix: | h_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Marketable Securities Held To Fund Operating Programs, Unrealized Gains (Losses) + References No definition available. + Details
Name: | h_MarketableSecuritiesHeldToFundOperatingProgramsUnrealizedGainsLosses
Namespace Prefix: | h_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, before tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A + Details
Name: | us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration