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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 0 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended |  | 1 Months Ended | 3 Months Ended |  | 12 Months Ended
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Oct. 17, 2011 | Sep. 27, 2014 | Sep. 28, 2013 | Sep. 29, 2012 | Sep. 27, 2014 Minimum [Member] | Sep. 27, 2014 Maximum [Member] | Sep. 28, 2013 Adiana Permanent Contraception System [Member] | Sep. 29, 2012 Adiana Permanent Contraception System [Member] | Mar. 30, 2013 Interlace [Member] | Sep. 27, 2014 Interlace [Member] | Sep. 28, 2013 Interlace [Member] | Sep. 29, 2012 Interlace [Member] | Sep. 24, 2011 Interlace [Member] Minimum [Member] | Sep. 24, 2011 Interlace [Member] Maximum [Member] | Jun. 30, 2011 TCT International Co., Ltd. [Member] | Dec. 28, 2013 TCT International Co., Ltd. [Member] | Sep. 28, 2013 TCT International Co., Ltd. [Member] | Sep. 27, 2014 Healthcome [Member] | Sep. 27, 2014 Finance Leases [Member] term Lease | Sep. 27, 2014 Finance Leases [Member] Minimum [Member] | Sep. 27, 2014 Finance Leases [Member] Maximum [Member] | Sep. 27, 2014 Finance Leases [Member] Leasehold Improvements [Member]
Contingent Consideration Earn-Out Payments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number Of Finance Leases |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |
Payment of contingent consideration |  | $ 0 | $ 43.0 | $ 51.7 |  |  | $ 16.8 | $ 8.8 | $ 86.9 |  | $ 39.0 | $ 47.6 |  |  |  | $ 31.1 | $ 87.4 |  |  |  |  |
Loss Contingency, Damages Awarded, Value | 18.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent payments period |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |  | 2 years |  |  |  |  |  |  |
Business Acquisition Contingent Consideration At Fair Value At Point In Time |  |  |  |  |  |  |  |  |  |  |  |  | 51.8 | 93.8 |  |  |  |  |  |  |  |
Contingent consideration – fair value adjustments |  |  |  |  |  |  |  |  | 93.8 |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued contingent payments |  |  |  |  |  |  |  |  |  | 3.3 |  |  |  |  |  |  |  | 0.7 |  |  |  |
Contingent consideration – compensation expense |  | 0 | 80.0 | 81.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant, and Equipment, Fair Value Disclosure |  |  | 1.4 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 28.3 |  |  |
Accrued expenses |  | 262.1 | 272.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.0 |  |  |
Accrued lease obligation-long-term |  | 34.1 | 33.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Optional Lease Extension Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years | 12 years |
Number Of Optional Lease Extensions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |
Lease Extension Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 35 years
Royalty Based On Revenue Lower Range Percentage |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty Based On Revenue Upper Range Percentage |  |  |  |  |  | 35.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease Expiration Year |  | 2035 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rent Expense Net Of Sublease Income |  | 21.1 | 19.9 | 18.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Rent Expense, Sublease Rentals |  | $ 1.8 | $ 1.9 | $ 3.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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