| Accounting Policies [Abstract] | Period [Axis] |
|---|
2015-09-27 - 2016-09-24 |
|---|
Accounting Policies [Abstract] | |
Summary of Marketable Securities | The following reconciles cost basis to fair market value. | | | | | | | | | | | | | | | | | | | | | | | | Cost | | Gross Unrealized
Gains | | Gross Unrealized
Losses | | Other Than Temporary Impairment | | Fair Value | As of September 24, 2016 | | $ | 2.4 |
| | $ | — |
| | $ | (0.3 | ) | | $ | (1.1 | ) | | $ | 1.0 |
| As of September 26, 2015 | | $ | 16.1 |
| | $ | 7.2 |
| | $ | (0.3 | ) | | $ | (7.8 | ) | | $ | 15.2 |
| As of September 27, 2014 | | $ | 15.5 |
| | $ | 10.2 |
| | $ | (1.3 | ) | | $ | — |
| | $ | 24.4 |
|
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Supplemental Cash Flow Statement Information | Supplemental Cash Flow Statement Information | | | | | | | | | | | | | | | | Years ended | September 24, 2016 | | September 26, 2015 | | September 27, 2014 | Cash paid during the period for income taxes | | $ | 184.8 |
| | $ | 168.7 |
| | $ | 231.8 |
| Cash paid during the period for interest | | $ | 104.0 |
| | $ | 143.0 |
| | $ | 155.7 |
|
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Schedule of Inventories | Inventories consisted of the following: | | | | | | | | | | | | September 24, 2016 | | September 26, 2015 | Raw materials | | $ | 96.4 |
| | $ | 98.3 |
| Work-in-process | | 51.7 |
| | 58.7 |
| Finished goods | | 126.6 |
| | 126.1 |
| | | $ | 274.7 |
| | $ | 283.1 |
|
|
Schedule of Property, Plant and Equipment | Property, plant and equipment consisted of the following: | | | | | | | | | | | | September 24, 2016 | | September 26, 2015 | Equipment and software | | $ | 381.9 |
| | $ | 365.9 |
| Equipment under customer usage agreements | | 334.6 |
| | 305.7 |
| Buildings and improvements | | 186.1 |
| | 182.1 |
| Leasehold improvements | | 65.6 |
| | 59.2 |
| Land | | 51.9 |
| | 51.4 |
| Furniture and fixtures | | 18.4 |
| | 17.3 |
| | | 1,038.5 |
| | 981.6 |
| Less - accumulated depreciation and amortization | | (578.3 | ) | | (524.5 | ) | | | $ | 460.2 |
| | $ | 457.1 |
|
Property, plant and equipment are depreciated over the following estimated useful lives: | | | | Asset Classification | | Estimated Useful Life | Building and improvements | | 35–40 years | Equipment and software | | 3–10 years | Equipment under customer usage agreements | | 3–8 years | Furniture and fixtures | | 5–7 years | Leasehold improvements | | Shorter of the Original Term of Lease or Estimated Useful Life |
|
Schedule of Intangible Assets | Intangible assets consisted of the following: | | | | | | | | | | | | | | | | | | | | September 24, 2016 | | September 26, 2015 | Description | | Gross Carrying Value | | Accumulated Amortization | | Gross Carrying Value | | Accumulated Amortization | Developed technology | | $ | 3,983.7 |
| | $ | 1,991.6 |
| | $ | 3,979.1 |
| | $ | 1,698.5 |
| In-process research and development | | 3.7 |
| | — |
| | 3.7 |
| | — |
| Customer relationships and contracts | | 1,098.9 |
| | 546.2 |
| | 1,101.1 |
| | 467.5 |
| Trade names | | 236.2 |
| | 141.6 |
| | 236.4 |
| | 131.5 |
| Business licenses | | 2.4 |
| | 2.1 |
| | 2.5 |
| | 2.1 |
| | | $ | 5,324.9 |
|
| $ | 2,681.5 |
|
| $ | 5,322.8 |
|
| $ | 2,299.6 |
|
|
Schedule of Estimated Amortization Expense | The estimated amortization expense at September 24, 2016 for each of the five succeeding fiscal years was as follows: | | | | | Fiscal 2017 | $ | 365.8 |
| Fiscal 2018 | $ | 355.0 |
| Fiscal 2019 | $ | 343.1 |
| Fiscal 2020 | $ | 331.4 |
| Fiscal 2021 | $ | 312.0 |
|
|
Rollforward of Goodwill Activity by Reportable Segment | A rollforward of goodwill activity by reportable segment from September 26, 2015 to September 24, 2016 is as follows: | | | | | | | | | | | | | | | | | | | | | | Diagnostics | | Breast Health | | GYN Surgical | | Skeletal Health | | Total | Balance at September 26, 2015 | $ | 1,152.3 |
| | $ | 631.8 |
| | $ | 1,016.0 |
| | $ | 8.1 |
| | $ | 2,808.2 |
| Tax adjustments | (1.3 | ) | | — |
| | — |
| | — |
| | (1.3 | ) | Foreign currency and other | (2.8 | ) | | — |
| | (1.0 | ) | | — |
| | (3.8 | ) | Balance at September 24, 2016 | $ | 1,148.2 |
|
| $ | 631.8 |
|
| $ | 1,015.0 |
|
| $ | 8.1 |
| | $ | 2,803.1 |
|
|
Schedule of Other Assets | Other assets consisted of the following: | | | | | | | | | | | | September 24, 2016 | | September 26, 2015 | Other Assets | | | | | Life insurance contracts | | $ | 36.0 |
| | $ | 27.5 |
| Manufacturing access fees | | 9.6 |
| | 11.6 |
| Derivative assets | | 0.4 |
| | 6.2 |
| Mutual funds | | — |
| | 5.6 |
| Marketable securities | | 1.0 |
| | 15.2 |
| Cost-method equity investments | | 3.5 |
| | 4.2 |
| Deferred tax assets | | 9.3 |
| | — |
| Other | | 23.9 |
| | 17.9 |
| | | $ | 83.7 |
| | $ | 88.2 |
|
|
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] | The following tables summarize the components and changes in accumulated balances of other comprehensive income for the periods presented: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Year Ended September 24, 2016 | | Year Ended September 26, 2015 | | Foreign Currency Translation | | Marketable Securities | | Pension Plans | | Hedged Interest Rate Caps | | Total | | Foreign Currency Translation | | Marketable Securities | | Pension Plans | | Hedged Interest Rate Caps | | Total | Beginning Balance | $ | (15.7 | ) | | $ | 6.9 |
| | $ | (1.8 | ) | | $ | (3.9 | ) | | $ | (14.5 | ) | | $ | (4.7 | ) | | $ | 8.9 |
| | $ | (1.6 | ) | | $ | — |
| | $ | 2.6 |
| Other comprehensive loss before reclassifications | (10.4 | ) | | (1.1 | ) | | (0.7 | ) | | (3.4 | ) | | (15.6 | ) | | (20.6 | ) | | (9.8 | ) | | (0.2 | ) | | (3.9 | ) | | (34.5 | ) | (Gains) charges reclassified to statement of income | — |
| | (6.1 | ) | | — |
| | 3.9 |
| | (2.2 | ) | | 9.6 |
| | 7.8 |
| | — |
| | — |
| | 17.4 |
| Ending Balance | $ | (26.1 | ) | | $ | (0.3 | ) | | $ | (2.5 | ) | | $ | (3.4 | ) | | $ | (32.3 | ) | | $ | (15.7 | ) | | $ | 6.9 |
| | $ | (1.8 | ) | | $ | (3.9 | ) | | $ | (14.5 | ) |
|
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] | The table below presents the fair value of the Company's derivative financial instruments as well as their classification on the balance sheet as of September 24, 2016: | | | | | | | | | | | | Balance Sheet Location | | September 24, 2016 | | September 26, 2015 |
| Assets: | | | | | | Derivative instruments designated as a cash flow hedge: | | | | | | Interest rate cap agreements | Prepaid expenses and other current assets | | $ | 1.0 |
| | $ | 0.7 |
| Interest rate cap agreements | Other Assets | | 0.4 |
| | 6.2 |
| | | | $ | 1.4 |
| | $ | 6.9 |
| | | | | | | Derivatives not designated as hedging instruments: | | | | | | Forward foreign currency contracts | Prepaid expenses and other current assets | | $ | 0.2 |
| | $ | — |
| | | | | | | Liabilities: | | | | | | Derivatives not designated as hedging instruments: | | | | | | Forward foreign currency contracts | Accrued expenses | | $ | 1.3 |
| | $ | — |
|
|
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] | The following table presents the unrealized loss recognized in AOCI related to the interest rate caps for the following reporting periods: | | | | | | | | | | Year Ended
September 24, 2016 | | Year Ended
September 26, 2015 | Amount of loss recognized in other comprehensive income, net of taxes: | | | | Interest rate cap agreements | $ | (3.4 | ) | | $ | (3.9 | ) |
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Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] | The following table presents the adjustment to fair value (realized and unrealized) recorded within the Consolidated Statements of Income for derivative instruments for which the Company did not elect hedge accounting: | | | | | | | | Derivatives not classified as hedging instruments | | | Location of Gain (Loss) Recognized in Income | | | Year Ended
September 24, 2016 | | | Forward foreign currency contracts | | $ | 0.4 |
| | Other income (expense), net |
|
Accounts Receivable Reserve Activity | Accounts receivable reserve activity for fiscal 2016, 2015 and 2014 was as follows: | | | | | | | | | | | | | | | | | | | | Balance at Beginning of Period | | Charged to Costs and Expenses | | Write- offs and Payments | | Balance at End of Period | Period Ended: | | | | | | | | | September 24, 2016 | | $ | 11.1 |
| | $ | 2.0 |
| | $ | (0.4 | ) | | $ | 12.7 |
| September 26, 2015 | | $ | 12.0 |
| | $ | 1.6 |
| | $ | (2.5 | ) | | $ | 11.1 |
| September 27, 2014 | | $ | 8.8 |
| | $ | 4.4 |
| | $ | (1.2 | ) | | $ | 12.0 |
|
|
Schedule of Reconciliation of Basic and Diluted Share Amounts | A reconciliation of basic and diluted share amounts for fiscal 2016, 2015, and 2014 was as follows: | | | | | | | | | | | | | September 24, 2016 | | September 26, 2015 | | September 27, 2014 | Basic weighted average common shares outstanding | | 280,213 |
| | 280,566 |
| | 275,499 |
| Weighted average common stock equivalents from assumed exercise of stock options and restricted stock units | | 2,631 |
| | 2,898 |
| | 2,368 |
| Incremental shares from Convertible Notes premium | | 3,312 |
| | 6,073 |
| | 493 |
| Diluted weighted average common shares outstanding | | 286,156 |
| | 289,537 |
| | 278,360 |
| Weighted-average anti-dilutive shares related to: | | | | | | | Outstanding stock options | | 1,029 |
| | 1,502 |
| | 5,033 |
| Restricted stock units | | 62 |
| | 49 |
| | 20 |
|
|
Schedule of Product Warranty Activity | Product warranty activity for fiscal 2016 and 2015 was as follows: | | | | | | | | | | | | | | | | | | | | Balance at Beginning of Period | | Provisions | | Settlements/ Adjustments | | Balance at End of Period | Period ended: | | | | | | | | | September 24, 2016 | | $ | 5.4 |
| | $ | 7.1 |
| | $ | (7.5 | ) | | $ | 5.0 |
| September 26, 2015 | | $ | 6.3 |
| | $ | 6.1 |
| | $ | (7.0 | ) | | $ | 5.4 |
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