Restructuring - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Restructuring - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 19.6	$ 16.3	$ 43.7	$ 36.3
Operational Evolution Program (OEP)
Restructuring Cost and Reserve [Line Items]
Expected costs to be incurred					$ 105.0
Cumulative restructuring charges	70.6		70.6
Operational Evolution Program (OEP) \| Banking
Restructuring Cost and Reserve [Line Items]
Expected costs to be incurred					38.0
Cumulative restructuring charges	22.6		22.6
Restructuring charges	6.6		12.6
Operational Evolution Program (OEP) \| Retail
Restructuring Cost and Reserve [Line Items]
Expected costs to be incurred					$ 15.0
Cumulative restructuring charges	7.5		7.5
Restructuring charges	$ (1.5)		$ 4.6
Continuous Improvement Initiative \| Banking
Restructuring Cost and Reserve [Line Items]
Restructuring charges		5.2		8.6
Continuous Improvement Initiative \| Retail
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 3.4		$ 10.5

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References + Details

- 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 + Details