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Related-Party Transactions	12 Months Ended
Related-Party Transactions	Dec. 31, 2025
EBP 002
EBP, Related Party and Party-in-Interest Transactions [Line Items]
Related-Party Transactions	Related-Party Transactions Certain Plan investments are shares of funds managed by the Company or one of its affiliates. The Company or one of its affiliates serves as trustee, investment adviser, custodian or administrator for these funds. The Plan also holds investments in shares of Northern Trust Corporation common stock. These transactions qualify as exempt party-in-interest transactions, in accordance with ERISA. There have been no identified prohibited transactions with a party-in-interest.