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Nonpension Postretirement and Postemployment Benefits VEBA Trusts (Details) - U.S. and Canada
$ in Millions
Jan. 02, 2021
USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Expected contribution by Company $ 19
Nonpension postretirement | Debt Securities  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Weighted-average target asset allocation 23.00%
Nonpension postretirement | Equity Securities  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Weighted-average target asset allocation 70.00%
Nonpension postretirement | Real Estate  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Weighted-average target asset allocation 7.00%