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Pensions and Other Post-Retirement Benefit Plans - Obligations and Funded Status (Details) - USD ($)
$ in Millions
Oct. 02, 2020
Jul. 03, 2020
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]    
Benefit obligation at end of period $ 374 $ 366
Fair value of plan assets at end of period 221 215
Unfunded status $ 153 $ 151