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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2017
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 30, 2017 |  | $ | 0.7 |  |  | $ | — |  |  | $ | (0.6 | ) |  | $ | — |  |  | $ | 0.1 |
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 |
Supplemental Cash Flow Statement Information | Supplemental Cash Flow Statement Information
|  | Years ended
September 30, 2017 |  | September 24, 2016 |  | September 26, 2015
Cash paid during the period for income taxes |  | $ | 867.8 |  |  | $ | 184.8 |  |  | $ | 168.7 |
Cash paid during the period for interest |  | $ | 102.4 |  |  | $ | 104.0 |  |  | $ | 143.0 |
Schedule of Inventories | Inventories consisted of the following:
|  | September 30, 2017 |  | September 24, 2016
Raw materials |  | $ | 95.7 |  |  | $ | 96.4 |
Work-in-process |  | 45.0 |  |  | 51.7 |
Finished goods |  | 190.9 |  |  | 126.6 |
|  | $ | 331.6 |  |  | $ | 274.7 |
Schedule of Property, Plant and Equipment | Property, plant and equipment consisted of the following:
|  | September 30, 2017 |  | September 24, 2016
Equipment and software |  | $ | 422.4 |  |  | $ | 381.9 |
Equipment under customer usage agreements |  | 368.7 |  |  | 334.6 |
Buildings and improvements |  | 172.0 |  |  | 186.1 |
Leasehold improvements |  | 60.6 |  |  | 65.6 |
Land |  | 46.3 |  |  | 51.9 |
Furniture and fixtures |  | 20.8 |  |  | 18.4 |
|  | 1,090.8 |  |  | 1,038.5 |
Less - accumulated depreciation and amortization |  | (599.6 | ) |  | (578.3 | )
|  | $ | 491.2 |  |  | $ | 460.2 |
Property, plant and equipment are depreciated over the following estimated useful lives:
Asset Classification |  | Estimated Useful Life
Building and improvements |  | 20–35 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 30, 2017 |  | September 24, 2016
Description |  | Gross Carrying Value |  | Accumulated Amortization |  | Gross Carrying Value |  | Accumulated Amortization
Developed technology |  | $ | 4,528.7 |  |  | $ | 2,186.8 |  |  | $ | 3,983.7 |  |  | $ | 1,991.6 |
In-process research and development |  | 46.0 |  |  | — |  |  | 3.7 |  |  | — |
Customer relationships |  | 552.8 |  |  | 393.8 |  |  | 1,098.9 |  |  | 546.2 |
Trade names |  | 310.3 |  |  | 156.4 |  |  | 236.2 |  |  | 141.6 |
Distribution agreement |  | 42.0 |  |  | 2.8 |  |  | — |  |  | — |
Non-competition agreements |  | 1.5 |  |  | 0.1 |  |  | — |  |  | — |
Business licenses |  | 2.4 |  |  | 2.2 |  |  | 2.4 |  |  | 2.1 |
|  | $ | 5,483.7 |  |  | $ | 2,742.1 |  |  | $ | 5,324.9 |  |  | $ | 2,681.5 |
Schedule of Estimated Amortization Expense | The estimated amortization expense at September 30, 2017 for each of the five succeeding fiscal years was as follows:
Fiscal 2018 | $ | 376.6 |
Fiscal 2019 | $ | 364.9 |
Fiscal 2020 | $ | 353.6 |
Fiscal 2021 | $ | 332.2 |
Fiscal 2022 | $ | 319.8 |
Rollforward of Goodwill Activity by Reportable Segment | A rollforward of goodwill activity by reportable segment from September 24, 2016 to September 30, 2017 is as follows:
| Diagnostics |  | Breast Health |  | Medical Aesthetics |  | GYN Surgical |  | Skeletal Health |  | Total
Balance at September 24, 2016 | $ | 1,148.2 |  |  | $ | 631.8 |  |  | $ | — |  |  | $ | 1,015.0 |  |  | $ | 8.1 |  |  | $ | 2,803.1 |
Acquisitions | — |  |  | 8.9 |  |  | 683.5 |  |  | — |  |  | — |  |  | 692.4 |
Sale of blood screening business | (325.0 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | (325.0 | )
Foreign currency and other adjustments | (0.2 | ) |  | 0.8 |  |  | — |  |  | 0.1 |  |  | — |  |  | 0.7 |
Balance at September 30, 2017 | $ | 823.0 |  |  | $ | 641.5 |  |  | $ | 683.5 |  |  | $ | 1,015.1 |  |  | $ | 8.1 |  |  | $ | 3,171.2 |
Schedule of Other Assets | Other assets consisted of the following:
|  | September 30, 2017 |  | September 24, 2016
Other Assets |  |  |  |
Life insurance contracts |  | $ | 41.0 |  |  | $ | 36.0 |
Capitalized software |  | 12.3 |  |  | 10.0 |
Manufacturing access fees |  | 7.1 |  |  | 9.6 |
Cost-method equity investments |  | 3.0 |  |  | 3.5 |
Deferred tax assets |  | 9.1 |  |  | 9.3 |
Other |  | 24.5 |  |  | 15.3 |
|  | $ | 97.0 |  |  | $ | 83.7 |
Changes in accumulated balances of other comprehensive income | The following tables summarize the components and changes in accumulated balances of other comprehensive income for the periods presented:
| Year Ended September 30, 2017 |  | Year Ended September 24, 2016
| 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 | $ | (26.1 | ) |  | $ | (0.3 | ) |  | $ | (2.5 | ) |  | $ | (3.4 | ) |  | $ | (32.3 | ) |  | $ | (15.7 | ) |  | $ | 6.9 |  |  | $ | (1.8 | ) |  | $ | (3.9 | ) |  | $ | (14.5 | )
Other comprehensive loss before reclassifications | 7.6 |  |  | 2.3 |  |  | 0.9 |  |  | 0.8 |  |  | 11.6 |  |  | (10.4 | ) |  | (1.1 | ) |  | (0.7 | ) |  | (3.4 | ) |  | (15.6 | )
(Gains) charges reclassified to statement of income | — |  |  | (2.4 | ) |  | — |  |  | 6.9 |  |  | 4.5 |  |  | — |  |  | (6.1 | ) |  | — |  |  | 3.9 |  |  | (2.2 | )
Ending Balance | $ | (18.5 | ) |  | $ | (0.4 | ) |  | $ | (1.6 | ) |  | $ | 4.3 |  |  | $ | (16.2 | ) |  | $ | (26.1 | ) |  | $ | (0.3 | ) |  | $ | (2.5 | ) |  | $ | (3.4 | ) |  | $ | (32.3 | )
Schedule of Derivative Instruments on the Consolidated Balance Sheets | 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 30, 2017:
| Balance Sheet Location |  | September 30, 2017 |  | September 24, 2016 |
Assets: |  |  |  |  |
Derivative instruments designated as a cash flow hedge: |  |  |  |  |
Interest rate cap agreements | Prepaid expenses and other current assets |  | $ | 3.6 |  |  | $ | 1.0 |
Interest rate cap agreements | Other Assets |  | 1.2 |  |  | 0.4 |
|  |  | $ | 4.8 |  |  | $ | 1.4 |
Derivatives not designated as hedging instruments: |  |  |  |  |
Forward foreign currency contracts | Prepaid expenses and other current assets |  | $ | 0.4 |  |  | $ | 0.2 |
Liabilities: |  |  |  |  |
Derivatives not designated as hedging instruments: |  |  |  |  |
Forward foreign currency contracts | Accrued expenses |  | $ | 4.0 |  |  | $ | 1.3 |
Schedule of Unrealized Loss Recognized in AOCI | The following table presents the unrealized loss recognized in AOCI related to the interest rate caps for the following reporting periods:
| Year Ended September 30, 2017 |  | 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 | $ | 0.8 |  |  | $ | (3.4 | ) | $ | (3.9 | )
Gain (Loss) on Fair Value Hedges Recognized in Earnings | 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 30, 2017 |  | Year Ended September 24, 2016 |  |
Forward foreign currency contracts |  | $ | 0.5 |  |  | $ | 0.4 |  |  | Other income (expense), net
Accounts Receivable Reserve Activity | Accounts receivable reserve activity for fiscal 2017, 2016 and 2015 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 30, 2017 |  | $ | 12.7 |  |  | $ | 1.8 |  |  | $ | (4.7 | ) |  | $ | 9.8 |
September 24, 2016 |  | $ | 11.1 |  |  | $ | 2.0 |  |  | $ | (0.4 | ) |  | $ | 12.7 |
September 26, 2015 |  | $ | 12.0 |  |  | $ | 1.6 |  |  | $ | (2.5 | ) |  | $ | 11.1 |
Schedule of Reconciliation of Basic and Diluted Share Amounts | A reconciliation of basic and diluted share amounts for fiscal 2017, 2016, and 2015 was as follows:
|  | September 30, 2017 |  | September 24, 2016 |  | September 26, 2015
Basic weighted average common shares outstanding |  | 279,811 |  |  | 280,213 |  |  | 280,566 |
Weighted average common stock equivalents from assumed exercise of stock options and restricted stock units |  | 2,885 |  |  | 2,631 |  |  | 2,898 |
Incremental shares from convertible notes premium |  | 2,957 |  |  | 3,312 |  |  | 6,073 |
Diluted weighted average common shares outstanding |  | 285,653 |  |  | 286,156 |  |  | 289,537 |
Weighted-average anti-dilutive shares related to: |  |  |  |  |  |
Outstanding stock options |  | 1,677 |  |  | 1,029 |  |  | 1,502 |
Restricted stock units |  | 12 |  |  | 62 |  |  | 49 |
Schedule of Product Warranty Activity | Product warranty activity for fiscal 2017 and 2016 was as follows:
|  | Balance at Beginning of Period |  | Acquired |  | Provisions |  | Settlements/ Adjustments |  | Balance at End of Period
Period ended: |  |  |  |  |  |  |  |  |  |
September 30, 2017 |  | $ | 5.0 |  |  | $ | 9.9 |  |  | $ | 15.3 |  |  | $ | (13.2 | ) |  | $ | 17.0 |
September 24, 2016 |  | $ | 5.4 |  |  | $ | — |  |  | $ | 7.1 |  |  | $ | (7.5 | ) |  | $ | 5.0 |

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