CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) $ in Millions	Jun. 24, 2016 € / shares	Jun. 24, 2016 USD ($) $ / shares shares	Sep. 25, 2015 € / shares	Sep. 25, 2015 USD ($) $ / shares shares
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts | $		$ 78		$ 68
Ordinary shares, par value (in dollars per share) | $ / shares		$ 0.01		$ 0.01
Ordinary shares, shares authorized		1,000,000,000		1,000,000,000
Ordinary shares, shares issued		426,593,392		422,400,870
Ordinary A shares, par value (in euros per share) | € / shares	€ 1.00		€ 1.00
Ordinary A shares, shares authorized		40,000		40,000
Ordinary A shares, shares outstanding		0		0
Preference shares, par value (in dollars per share) | $ / shares		$ 0.01		$ 0.01
Preference shares, shares authorized		100,000,000		100,000,000
Preference shares, shares outstanding		0		0
Ordinary shares held in treasury, shares		412,594		79,770