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Income Tax Expense - Domestic and Foreign Components of Income Before Income Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 28, 2019
Jun. 29, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]      
Foreign $ (642) $ 2,398 $ 560
Domestic 355 (313) 209
Income (loss) before taxes $ (287) $ 2,085 $ 769