Pension, Postretirement and Postemployment Benefits - Fair Values of Plan Asset Class and Fair Value Hierarchy Level (Details) $ in Thousands	Dec. 30, 2018 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	$ 357,200
Equity - Large cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	300
Equity - Small Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	251,300
International measured at net asset value
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	105,600
Quoted Prices in Active Markets For Identical Assets (Level 1)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	251,300
Quoted Prices in Active Markets For Identical Assets (Level 1) | Equity - Large cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	0
Quoted Prices in Active Markets For Identical Assets (Level 1) | Equity - Small Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	251,300
Quoted Prices in Active Markets For Identical Assets (Level 1) | International measured at net asset value
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	0
Significant Other Observable Inputs (Level 2)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	0
Significant Other Observable Inputs (Level 2) | Equity - Large cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	0
Significant Other Observable Inputs (Level 2) | Equity - Small Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	0
Significant Other Observable Inputs (Level 2) | International measured at net asset value
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	0
Significant Unobservable Inputs (Level 3)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	0
Significant Unobservable Inputs (Level 3) | Equity - Large cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	0
Significant Unobservable Inputs (Level 3) | Equity - Small Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	0
Significant Unobservable Inputs (Level 3) | International measured at net asset value
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value measurements	$ 0