Derivative and hedging activities - Outstanding Interest Rate Derivatives (Details) - Cross-currency swaps € in Millions	Mar. 31, 2026 USD ($) instrument	Mar. 31, 2026 EUR (€) instrument	Dec. 31, 2025 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional purchased			$ 750,000,000.0
Net Investment Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of instruments | instrument	3,000,000	3,000,000
Notional sold | €		€ 732.1
Notional purchased	$ 750,000,000.0