Financial Instruments - Narrative (Details) € in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2026 USD ($)	Mar. 29, 2025 USD ($)	Mar. 31, 2026 EUR (€) tranche	Mar. 31, 2026 USD ($) tranche	Dec. 31, 2025 USD ($)
Financial Instruments
Gain (loss) recognized in translation for the net investment hedges \| $	$ 11.0	$ (8.0)
Cross Currency Interest Rate Contract \| Cash Flow Hedging \| Designated as Hedging Instrument
Financial Instruments
Notional amount \| $				$ 250.0
Foreign currency forward contracts \| Designated as Hedging Instrument
Financial Instruments
Notional amount \| $				$ 1,147.3	$ 1,173.8
Foreign currency forward contracts \| Net Investment Hedging \| Designated as Hedging Instrument
Financial Instruments
Notional amount			€ 1,000
Number of tranches \| tranche			2	2
Foreign Exchange Forward, Maturity Date December 2025 \| Net Investment Hedging \| Designated as Hedging Instrument
Financial Instruments
Notional amount			€ 500
Foreign Exchange Forward, Maturity Date September 2026 \| Net Investment Hedging \| Designated as Hedging Instrument
Financial Instruments
Notional amount			500
Senior Notes Due 2035
Financial Instruments
Face amount			500
Senior Notes Due 2034
Financial Instruments
Face amount			€ 500

Avery Dennison Corp 10-Q