Commitments and Contingencies (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
	Oct. 08, 2015	Mar. 25, 2016	Mar. 25, 2016	Mar. 27, 2015	Sep. 25, 2015	Sep. 30, 2001
Loss Contingencies
Disallowance related to interest deductions on Tyco International's U.S. income tax returns for intercompany loans originating during the period 1997 through 2000		$ 2,700	$ 2,700
Additional disallowance related to interest deductions on Tyco International's U.S. income tax returns for intercompany loans subsequent to fiscal 2000		6,600	6,600
Increase in taxable income in connection with the audit of Tyco International's fiscal years 1997 through 2000 relating to the disallowed interest deduction on certain intercompany loans		2,900	2,900
Additional tax in connection with the audit of Tyco International's fiscal years 1997 through 2000 relating to the disallowed interest deduction on certain intercompany loans		778	778
Additional penalties in connection with the audit of Tyco International's fiscal years 1997 through 2000 relating to the disallowed interest deduction on certain intercompany loans		154	154
Additional withholding taxes in connection with the audit of Tyco International's fiscal years 1997 through 2000 relating to the disallowed interest deduction on certain intercompany loans		105	105
Additional tax deficiency relating to the Final Partnership Administrative Adjustments		30	$ 30
Liabilities sharing percent, entity			31.00%
Liabilities sharing percent, Tyco International			27.00%
Liabilities sharing percent, Covidien			42.00%
Income tax benefit associated with settlement of certain U.S. tax matters				$ 202
Other nonoperating expense, settlement of certain U.S. tax matters				$ 94
Pre-paymnet to IRS for pre-separation tax matters		443
Indemnification reimbursements related to pre-separation tax matters		305
Indemnification payments related to pre-separation tax matters		2
Net cash payments made (received) related to pre-separation tax matters		140
Liabilities related to the audits of Tyco International and our income tax returns		17	$ 17		$ 17
Environmental matters
Loss Contingencies
Loss contingency, range of possible loss, minimum		16	16
Loss contingency, range of possible loss, maximum		43	43
Loss contingency, estimate of probable loss		$ 19	$ 19
Com-Net
Loss Contingencies
Loss contingency, range of possible loss, maximum						$ 80
Loss Contingency, purchase price plus interest and costs	$ 127