WARNING
Concept BalanceSheetLocationAxis in us-gaap/2025 used in 22 facts was deprecated as of 2026 and should not be used.
WARNING
Concept IncomeStatementLocationAxis in us-gaap/2025 used in 123 facts was deprecated as of 2026 and should not be used.
WARNING
Concept InterestIncomeMember in us-gaap/2025 used in 18 facts was deprecated as of 2026 and should not be used.
WARNING
Concept InterestExpenseMember in us-gaap/2025 used in 3 facts was deprecated as of 2026 and should not be used.
WARNING
Concept OtherIncomeMember in us-gaap/2025 used in 18 facts was deprecated as of 2026 and should not be used.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 1819000000 and preferred label http://www.xbrl.org/2003/role/periodStartLabel, was not shown because there are no facts in a duration starting at 2023-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 1819000000 and preferred label http://www.xbrl.org/2003/role/periodEndLabel, was not shown because there are no facts in a duration ending at 2023-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 933000000 and preferred label http://www.xbrl.org/2003/role/periodStartLabel, was not shown because there are no facts in a duration starting at 2023-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 933000000 and preferred label http://www.xbrl.org/2003/role/periodEndLabel, was not shown because there are no facts in a duration ending at 2023-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 1819000000 and preferred label http://www.xbrl.org/2003/role/periodStartLabel, was not shown because there are no facts in a duration starting at 2024-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 1819000000 and preferred label http://www.xbrl.org/2003/role/periodEndLabel, was not shown because there are no facts in a duration ending at 2024-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 933000000 and preferred label http://www.xbrl.org/2003/role/periodStartLabel, was not shown because there are no facts in a duration starting at 2024-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 933000000 and preferred label http://www.xbrl.org/2003/role/periodEndLabel, was not shown because there are no facts in a duration ending at 2024-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 1819000000 and preferred label http://www.xbrl.org/2003/role/periodStartLabel, was not shown because there are no facts in a duration starting at 2025-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 1819000000 and preferred label http://www.xbrl.org/2003/role/periodEndLabel, was not shown because there are no facts in a duration ending at 2025-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 933000000 and preferred label http://www.xbrl.org/2003/role/periodStartLabel, was not shown because there are no facts in a duration starting at 2025-12-31. Change the preferred label role or add facts.
WARNING
In "Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details)", fact us-gaap:Goodwill with value 933000000 and preferred label http://www.xbrl.org/2003/role/periodEndLabel, was not shown because there are no facts in a duration ending at 2025-12-31. Change the preferred label role or add facts.
WARNING
us-gaap:Goodwill in context c-1071 was not selected in any presentation group. Ensure that its dimension members {'us-gaap:StatementBusinessSegmentsAxis': 'key:ConsumerBankMember'} are presented in presentation roles {'http://www.key.com/role/GoodwillandOtherIntangibleAssetsChangesinCarryingAmountofGoodwillDetails', 'http://www.key.com/role/ConsolidatedBalanceSheets'}.
WARNING
us-gaap:Goodwill in context c-1072 was not selected in any presentation group. Ensure that its dimension members {'us-gaap:StatementBusinessSegmentsAxis': 'key:CommercialBankMember'} are presented in presentation roles {'http://www.key.com/role/GoodwillandOtherIntangibleAssetsChangesinCarryingAmountofGoodwillDetails', 'http://www.key.com/role/ConsolidatedBalanceSheets'}.
WARNING
us-gaap:Goodwill in context c-1073 was not selected in any presentation group. Ensure that its dimension members {'us-gaap:StatementBusinessSegmentsAxis': 'key:ConsumerBankMember'} are presented in presentation roles {'http://www.key.com/role/GoodwillandOtherIntangibleAssetsChangesinCarryingAmountofGoodwillDetails', 'http://www.key.com/role/ConsolidatedBalanceSheets'}.
WARNING
us-gaap:Goodwill in context c-1074 was not selected in any presentation group. Ensure that its dimension members {'us-gaap:StatementBusinessSegmentsAxis': 'key:CommercialBankMember'} are presented in presentation roles {'http://www.key.com/role/GoodwillandOtherIntangibleAssetsChangesinCarryingAmountofGoodwillDetails', 'http://www.key.com/role/ConsolidatedBalanceSheets'}.
WARNING
us-gaap:Goodwill in context c-1075 was not selected in any presentation group. Ensure that its dimension members {'us-gaap:StatementBusinessSegmentsAxis': 'key:ConsumerBankMember'} are presented in presentation roles {'http://www.key.com/role/GoodwillandOtherIntangibleAssetsChangesinCarryingAmountofGoodwillDetails', 'http://www.key.com/role/ConsolidatedBalanceSheets'}.
WARNING
us-gaap:Goodwill in context c-1076 was not selected in any presentation group. Ensure that its dimension members {'us-gaap:StatementBusinessSegmentsAxis': 'key:CommercialBankMember'} are presented in presentation roles {'http://www.key.com/role/GoodwillandOtherIntangibleAssetsChangesinCarryingAmountofGoodwillDetails', 'http://www.key.com/role/ConsolidatedBalanceSheets'}.
