Benefit Plans - Weighted Average Expected Long-Term Rate of Return (Detail) - Pension Plans	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 29, 2019	Dec. 30, 2018
Primary Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		100.00%	100.00%
Weighted Average Expected Long-Term Rate of Return - 2021		5.50%	5.00%	6.00%
Primary Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	100.00%
Weighted Average Expected Long-Term Rate of Return - 2021	4.75%
Bargaining Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		100.00%	100.00%
Weighted Average Expected Long-Term Rate of Return - 2021		6.25%	5.25%	6.00%
Bargaining Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	100.00%
Weighted Average Expected Long-Term Rate of Return - 2021	5.75%
U.S. debt securities | Primary Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		58.00%	57.00%
U.S. debt securities | Primary Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	65.00%
Weighted Average Expected Long-Term Rate of Return - 2021	3.09%
U.S. debt securities | Bargaining Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		46.00%	46.00%
U.S. debt securities | Bargaining Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	40.00%
Weighted Average Expected Long-Term Rate of Return - 2021	2.30%
U.S. equity securities | Primary Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		24.00%	23.00%
U.S. equity securities | Primary Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	26.00%
Weighted Average Expected Long-Term Rate of Return - 2021	1.24%
U.S. equity securities | Bargaining Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		39.00%	39.00%
U.S. equity securities | Bargaining Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	46.00%
Weighted Average Expected Long-Term Rate of Return - 2021	2.65%
International debt securities | Primary Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		8.00%	9.00%
International debt securities | Primary Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	0.00%
Weighted Average Expected Long-Term Rate of Return - 2021	0.00%
International debt securities | Bargaining Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		2.00%	2.00%
International debt securities | Bargaining Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	0.00%
Weighted Average Expected Long-Term Rate of Return - 2021	0.00%
International equity securities | Primary Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		8.00%	8.00%
International equity securities | Primary Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	7.00%
Weighted Average Expected Long-Term Rate of Return - 2021	0.32%
International equity securities | Bargaining Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		12.00%	12.00%
International equity securities | Bargaining Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	12.00%
Weighted Average Expected Long-Term Rate of Return - 2021	0.68%
Cash and cash equivalents | Primary Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		2.00%	3.00%
Cash and cash equivalents | Primary Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	2.00%
Weighted Average Expected Long-Term Rate of Return - 2021	0.10%
Cash and cash equivalents | Bargaining Plan
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at Fiscal Year-End		1.00%	1.00%
Cash and cash equivalents | Bargaining Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Target Allocation 2021	2.00%
Weighted Average Expected Long-Term Rate of Return - 2021	0.12%