Restructuring - Narrative (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Mar. 31, 2018	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1.0	$ 2.1			$ 2.0	$ 4.1
2018 restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges, release of liability					0.8
2018 restructuring plan | JBT FoodTech
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs, incurred cost				$ 62.2
Restructuring charges, release of liability				$ 11.9
2020 restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges, release of liability					0.8
Cumulative amount of restructuring costs	13.0				13.0		$ 10.2
Restructuring charges					13.0
Cumulative release of related liability					1.1
2020 restructuring plan | JBT AeroTech
Restructuring Cost and Reserve [Line Items]
Total expected restructuring cost under plan								$ 6.0
Severance and related expense | Immaterial Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges, release of liability			$ 0.2
Restructuring charges			$ 2.4
Severance and related expense | 2020 restructuring plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges, release of liability					0.8
Cumulative amount of restructuring costs	$ 8.0				$ 8.0		$ 7.0
Minimum | 2020 restructuring plan | JBT FoodTech
Restructuring Cost and Reserve [Line Items]
Total expected restructuring cost under plan								9.0
Maximum | 2020 restructuring plan | JBT FoodTech
Restructuring Cost and Reserve [Line Items]
Total expected restructuring cost under plan								$ 10.0