Segments - Reconciliation of Net Earnings to Total Company Adjusted EBITDA- Depreciation and Restructuring Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Depreciation and Amortization [Abstract]
Depreciation and amortization			$ 129.7	$ 107.3
Depreciation and amortization adjustments	$ 0.0	$ (0.1)	0.0	(1.1)
Depreciation and amortization, net of adjustments	56.2	53.2	161.1	131.4
Share-based incentive compensation	12.3	12.0	31.3	25.2
Restructuring charges	1.0	6.9	11.7	43.6
Share-based compensation expense
Depreciation and Amortization [Abstract]
Depreciation and amortization	56.2	53.3	161.1	132.5
Depreciation and amortization
Depreciation and Amortization [Abstract]
Share-based incentive compensation	12.3	12.0	31.3	25.2
Food
Depreciation and Amortization [Abstract]
Restructuring charges	(1.4)	3.9	3.8	26.3
Food | Operating Segments
Depreciation and Amortization [Abstract]
Depreciation and amortization	31.7	30.6	90.9	81.8
Protective
Depreciation and Amortization [Abstract]
Restructuring charges	2.4	3.0	7.9	17.3
Protective | Operating Segments
Depreciation and Amortization [Abstract]
Depreciation and amortization	$ 24.5	$ 22.7	$ 70.2	$ 50.7