Employee Retirement and Profit Sharing Plans - Assumptions used to Determine Net Periodic Benefit Cost (Details) - Pension Plan	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Effective discount rate for benefit obligations (as a percent)	4.38%	3.69%	4.29%
Effective rate for interest on benefit obligations (as a percent)	4.04%	3.32%	3.56%
Effective discount rate for service cost (as a percent)	4.46%	3.79%	4.51%
Effective rate for interest on service cost (as a percent)	4.18%	3.51%	3.91%
Expected return on assets (as a percent)	5.50%	5.25%	6.25%
Rate of compensation increase (as a percent)	3.70%	3.70%	3.70%