v3.25.1
Commitments and contingencies - Narrative (Details) - WageWorks Inc. - USD ($)
$ in Millions
12 Months Ended
Nov. 27, 2024
Nov. 05, 2021
Jan. 31, 2025
Nov. 24, 2021
Apr. 30, 2021
Loss Contingencies [Line Items]          
Lease payments, not yet commenced         $ 63.1
Operating lease not yet commenced term of contract (in years)         11 years
Union Mesa          
Loss Contingencies [Line Items]          
Lessee, operating lease, abated rent, period   11 months      
Letters of credit outstanding $ 2.8     $ 2.8  
Litigation settlement, amount awarded to other party $ 30.0   $ 30.0