Associate Benefit Plans - Significant Assumptions (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Discount rate for net periodic benefit cost	2.40%	3.20%	4.20%
Discount rate for disclosure obligations	2.70%	2.40%	3.10%
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate for net periodic benefit cost	2.50%	2.91%
Expected return on plan assets	6.25%	6.50%
Discount rate for disclosure obligations	2.82%	3.25%
Other Postretirement Benefits | FMS Other Postretirement
Defined Benefit Plan Disclosure [Line Items]
Discount rate for net periodic benefit cost	1.47%	2.61%
Discount rate for disclosure obligations	2.07%	1.49%
Other Postretirement Benefits | Split-Dollar Plan
Defined Benefit Plan Disclosure [Line Items]
Discount rate for net periodic benefit cost	1.44%	2.57%
Discount rate for disclosure obligations	2.04%	1.45%
Other Postretirement Benefits | Beneficial
Defined Benefit Plan Disclosure [Line Items]
Discount rate for net periodic benefit cost	2.32%	3.12%
Discount rate for disclosure obligations	2.70%	2.31%