Equity (Details) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended		3 Months Ended		9 Months Ended
	May 31, 2020 shares	Mar. 31, 2020 installment $ / shares	Jun. 26, 2020 USD ($) $ / shares	Jun. 28, 2019 USD ($) $ / shares	Jun. 26, 2020 USD ($) $ / shares shares	Jun. 28, 2019 USD ($) $ / shares shares	Sep. 27, 2019 USD ($)
Equity
Maximum percentage of shares that the board may authorize for issuance		50.00%
Dividends paid per common share | $ / shares			$ 0.48	$ 0.46	$ 1.40	$ 1.34
Cancellation of treasury shares (in shares) | shares	12
Dividend or cash distribution approved (in currency per share) | $ / shares		$ 1.92
Number of quarterly dividend installments | installment		4
Cash distribution quarterly installment payable (in dollars per share) | $ / shares		$ 0.48
Unpaid portion of the dividend payment recorded in accrued and other current liabilities | $			$ 475		$ 475		$ 308
Number of common shares repurchased | shares					6	10
Repurchase value | $			82	$ 152	$ 505	$ 836
Amount available for repurchase, at end of period | $			$ 1,000		$ 1,000