Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 24, 2010
Income
(Loss) income from continuing operations	$ (332)	$ 617	$ 295
(Loss) income from continuing operations attributable to Tyco common shareholders, giving effect to dilutive adjustments	$ (332)	$ 617	$ 295
Shares
Income from continuing operations (in shares)	463	474	485
Share options, restricted share awards		5	3
Income from continuing operations attributable to Tyco common shareholders, giving effect to dilutive adjustments (in shares)	463	479	488
Per Share Amount
(Loss) income from continuing operations (in dollars per share)	$ (0.72)	$ 1.30	$ 0.61
Income (loss) from continuing operations attributable to Tyco common shareholders, giving effect to dilutive adjustments (in dollars per share)	$ (0.72)	$ 1.29	$ 0.60
Stock Options
Earnings Per Share
Stock options and restricted stock excluded from the computation of earnings per share	12	10	15
Restricted Stock
Earnings Per Share
Stock options and restricted stock excluded from the computation of earnings per share	2		2