Restructuring and Impairment Charges - Charges (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2020
Restructuring and impairment charges
Restructuring charges	$ 14.0	$ 4.0
Cost Smart Cost of Sales Program
Restructuring and impairment charges
Restructuring charges	9.0	1.0
Cost Smart Cost of Sales Program, Production facility closure, Australia
Restructuring and impairment charges
Restructuring charges	5.0
Cost Smart Cost of Sales Program, Production facility closure, Australia | Forecast | Minimum
Restructuring and impairment charges
Restructuring charges			$ 5.0
Cost Smart Cost of Sales Program, Production facility closure, Australia | Forecast | Maximum
Restructuring and impairment charges
Restructuring charges			$ 7.0
Cost Smart Cost of Sales Program, Production facility closure, Australia | Asset write-off
Restructuring and impairment charges
Restructuring charges	3.0
Cost Smart Cost of Sales Program, Production facility closure, Australia | Accelerated depreciation
Restructuring and impairment charges
Restructuring charges	1.0
Cost Smart Cost of Sales Program, Production facility closure, Australia | Other restructuring costs
Restructuring and impairment charges
Restructuring charges	1.0
Cost Smart Cost of Sales Program, North America
Restructuring and impairment charges
Restructuring charges	4.0
Cost Smart Cost of Sales Program, North America | Accelerated depreciation
Restructuring and impairment charges
Restructuring charges	3.0
Cost Smart Cost of Sales Program, North America | Professional Services
Restructuring and impairment charges
Restructuring charges	1.0
Cost Smart SG&A Program
Restructuring and impairment charges
Restructuring charges	5.0
Cost Smart SG&A Program | Employee-related severance costs
Restructuring and impairment charges
Restructuring charges	2.0
Cost Smart SG&A Program | Employee-related severance and other costs
Restructuring and impairment charges
Restructuring charges		3.0
Cost Smart SG&A Program | Other restructuring costs
Restructuring and impairment charges
Restructuring charges	$ 3.0
Cost Smart SG&A Program, Latin American Finance Transformation Initiative | Other restructuring costs
Restructuring and impairment charges
Restructuring charges		$ 1.0