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Note 12 Unrecognized Stock Based Compensation Expense (Details) - Restricted stock units
$ in Millions
3 Months Ended
Jan. 01, 2022
USD ($)
Unrecognized Compensation Cost and Weighted Average Period [Line Items]  
Unrecognized compensation expense $ 64
Weighted average period of recognition (years) 1 year 7 months 6 days