Lawsuits, Claims, Commitments, Contingencies and Related Matters (Details) $ in Millions			1 Months Ended	3 Months Ended
	Apr. 24, 2022	Apr. 13, 2022 USD ($)	Apr. 30, 2021 USD ($) audit	Apr. 03, 2022 USD ($)	Jan. 02, 2022 USD ($)
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Reserves for environmental remediation obligations				$ 6.3	$ 6.3
Accrued liabilities				$ 612.2	$ 1,028.9
Subsequent Event
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Consent Agreement term (in years)	4 years
FLIR | DDTC Consent Agreement | Subsequent Event
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Final installment paid		$ 3.5
FLIR | BIS
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Litigation of settlement and fine			$ 0.3
Internal audits | audit			2
Maximum
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Estimated duration of remediation (in years)				30 years
Accrued liabilities
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Accrued liabilities				$ 1.8