Retirement and Postretirement Employee Benefit Plans - Narrative (Details) $ in Thousands					12 Months Ended
	Oct. 01, 2022	Jan. 01, 2022	Jan. 01, 2021	Dec. 31, 2020	Sep. 30, 2022 USD ($) plan shares	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Recovery period					15 years
Supplemental Executive Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contributions					$ 4,831	$ 30,418
Settlement charge					0	(9,151)	$ (9,180)
Lump sum settlement					0	25,698
Assets held-in-trust					30,200	38,100
Postretirement Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions					$ 14,749	20,581
Percent of projected claims paid					80.00%
Remaining percent of claims paid by participant					20.00%
Employer contribution limit					3.00%
Employer contribution limit removal		3.00%
Postretirement Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected contribution amount					$ 15,000
Postretirement Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected contribution amount					$ 25,000
Employee Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Vesting period					3 years
Employer contributions					$ 8,500	10,000
Accounts receivable					$ 2,400	$ 2,100
Employee Pension Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Medium-term horizon					3 years
Employee Pension Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Medium-term horizon					5 years
Company stock | Employee Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Shares held by plan (in shares) | shares					716,700	716,700
Percent of plan assets					15.30%	10.60%
Dividend income					$ 1,900	$ 1,800
Diversified investment funds | Postretirement Plan
Defined Benefit Plan Disclosure [Line Items]
Percent of plan assets					97.70%	97.90%
Maximum investment percent					75.00%
Supplemental Executive Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Number of nonqualified supplemental plans offered | plan					3
Supplemental Executive Benefit Plan | Supplemental Executive Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Percent of covered compensation					75.00%
1998 Supplemental Executive Retirement Plan, Defined Benefit | Supplemental Executive Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Percent of covered compensation					60.00%
2009 Supplemental Executive Retirement Plan, Defined Benefit | Supplemental Executive Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Vesting period					3 years
Contribution percent					10.00%
Contribution percent for members					25.00%
Attainment age					55 years
Retirement Savings Plan
Defined Benefit Plan Disclosure [Line Items]
Maximum of eligible compensation					65.00%
New employee contribution percentage					4.00%
Percent of employee contribution					100.00%
Employer matching, percent of employee salary					4.00%
Years of service			1 year	1 year
Fixed annual contribution percent					4.00%
Years of service vesting period					3 years
Contribution plan cost					$ 21,900	$ 20,600	$ 17,900
Percent of common stock outstanding					1.60%	1.90%
Retirement Savings Plan | Subsequent Event
Defined Benefit Plan Disclosure [Line Items]
Employer matching, percent of employee salary	10.00%
Automatic increase feature	1.00%
Executive Officer | Supplemental Executive Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Settlement charge					$ (9,200)
Lump sum settlement					$ 25,700