Employee Benefit Plans (Schedule of Changes in Fair Value of Plan Assets, Pension Plans) (Details) - Pension Plans, Defined Benefit - USD ($) $ in Thousands	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 434,310	$ 393,505
Equity Securities, U.S. Small-cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,700	1,928
Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6,177	6,326
Equity Securities, U.S. Large-cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	57,797	35,072
Equity Securities, International large-cap value[Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	26,914	24,175
Equity Securities, Emerging Markets Growth [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12,853	11,993
Equity Securities, Equity Index Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		54,342
Equity Securities, Domestic Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,010	1,353
Equity Securities, Foreign Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22,688	22,196
Equity Securities, Commodity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		886
Debt Security, Government, Non-US [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	93,473	23,352
Fixed Income Funds, Corporate Debt Instruments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	139,300	131,211
Fixed Income Funds, Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	29,846	24,848
Fixed Income Funds, High Yield Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,734	5,186
Other Types of Investments, Multi-strategy hedge funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,721	16,934
Other Types of Investments, Non U.S. Government Index Linked Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33,097	33,703
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	161,289	135,052
Fair Value, Inputs, Level 1 [Member] | Equity Securities, U.S. Small-cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,700	1,928
Fair Value, Inputs, Level 1 [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6,177	6,326
Fair Value, Inputs, Level 1 [Member] | Equity Securities, U.S. Large-cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	57,797	35,072
Fair Value, Inputs, Level 1 [Member] | Equity Securities, International large-cap value[Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	26,914	24,175
Fair Value, Inputs, Level 1 [Member] | Equity Securities, Emerging Markets Growth [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12,853	11,993
Fair Value, Inputs, Level 1 [Member] | Equity Securities, Equity Index Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Fair Value, Inputs, Level 1 [Member] | Equity Securities, Domestic Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,010	1,353
Fair Value, Inputs, Level 1 [Member] | Equity Securities, Foreign Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Equity Securities, Commodity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		886
Fair Value, Inputs, Level 1 [Member] | Debt Security, Government, Non-US [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Fixed Income Funds, Corporate Debt Instruments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	47,104	48,133
Fair Value, Inputs, Level 1 [Member] | Fixed Income Funds, Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Fixed Income Funds, High Yield Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,734	5,186
Fair Value, Inputs, Level 1 [Member] | Other Types of Investments, Multi-strategy hedge funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 1 [Member] | Other Types of Investments, Non U.S. Government Index Linked Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	248,612	219,323
Fair Value, Inputs, Level 2 [Member] | Equity Securities, U.S. Small-cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Equity Securities, U.S. Large-cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Equity Securities, International large-cap value[Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Equity Securities, Emerging Markets Growth [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Equity Securities, Equity Index Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		54,342
Fair Value, Inputs, Level 2 [Member] | Equity Securities, Domestic Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Equity Securities, Foreign Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Equity Securities, Commodity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Fair Value, Inputs, Level 2 [Member] | Debt Security, Government, Non-US [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	93,473	23,352
Fair Value, Inputs, Level 2 [Member] | Fixed Income Funds, Corporate Debt Instruments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	92,196	83,078
Fair Value, Inputs, Level 2 [Member] | Fixed Income Funds, Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	29,846	24,848
Fair Value, Inputs, Level 2 [Member] | Fixed Income Funds, High Yield Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Other Types of Investments, Multi-strategy hedge funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 2 [Member] | Other Types of Investments, Non U.S. Government Index Linked Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33,097	33,703
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	24,409	39,130	$ 16,789	$ 23,790
Fair Value, Inputs, Level 3 [Member] | Equity Securities, U.S. Small-cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities, U.S. Large-cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities, International large-cap value[Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities, Emerging Markets Growth [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities, Equity Index Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Fair Value, Inputs, Level 3 [Member] | Equity Securities, Domestic Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities, Foreign Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22,688	22,196
Fair Value, Inputs, Level 3 [Member] | Equity Securities, Commodity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Fair Value, Inputs, Level 3 [Member] | Debt Security, Government, Non-US [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Fixed Income Funds, Corporate Debt Instruments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Fixed Income Funds, Corporate Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Fixed Income Funds, High Yield Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Inputs, Level 3 [Member] | Other Types of Investments, Multi-strategy hedge funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,721	16,934	$ 16,789	$ 23,790
Fair Value, Inputs, Level 3 [Member] | Other Types of Investments, Non U.S. Government Index Linked Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0	$ 0