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Business Segments and Geographic Information - Segment Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Apr. 01, 2017 | Mar. 26, 2016 | Apr. 01, 2017 | Mar. 26, 2016 | Sep. 24, 2016
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | $ 715.4 | $ 693.3 | $ 1,449.8 | $ 1,388.4 |
Operating income (loss) | 999.8 | 136.1 | 1,145.8 | 262.1 |
Depreciation and amortization | 95.1 | 114.0 | 210.4 | 229.9 |
Capital expenditures | 25.1 | 22.0 | 49.8 | 41.7 |
Identifiable assets | 8,706.6 |  | 8,706.6 |  | $ 7,317.0
Diagnostics |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 296.0 | 304.4 | 621.3 | 615.1 |
Operating income (loss) | 929.7 | 34.3 | 970.9 | 65.8 |
Depreciation and amortization | 64.4 | 83.8 | 149.3 | 167.4 |
Capital expenditures | 11.5 | 13.0 | 21.8 | 24.9 |
Identifiable assets | 2,717.7 |  | 2,717.7 |  | 3,771.9
Breast Health |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 280.5 | 275.8 | 553.8 | 537.9 |
Operating income (loss) | 92.7 | 88.4 | 177.9 | 160.0 |
Depreciation and amortization | 4.6 | 5.1 | 9.7 | 12.4 |
Capital expenditures | 1.8 | 3.4 | 4.0 | 5.4 |
Identifiable assets | 813.4 |  | 813.4 |  | 809.1
GYN Surgical |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 101.1 | 90.9 | 215.9 | 189.7 |
Operating income (loss) | 1.8 | 11.5 | 27.2 | 32.3 |
Depreciation and amortization | 23.4 | 24.8 | 48.5 | 49.5 |
Capital expenditures | 3.3 | 3.4 | 7.4 | 6.8 |
Identifiable assets | 1,533.8 |  | 1,533.8 |  | 1,570.7
Skeletal Health |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 21.8 | 22.2 | 42.8 | 45.7 |
Operating income (loss) | 0.1 | 1.9 | (5.7) | 4.0 |
Depreciation and amortization | 0.2 | 0.3 | 0.4 | 0.6 |
Capital expenditures | 0.1 | 0.1 | 0.4 | 0.2 |
Identifiable assets | 31.4 |  | 31.4 |  | 30.9
Medical Aesthetics |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 16.0 | 0.0 | 16.0 | 0.0 |
Operating income (loss) | (24.5) | 0.0 | (24.5) | 0.0 |
Depreciation and amortization | 2.5 | 0.0 | 2.5 | 0.0 |
Capital expenditures | 0.4 | 0.0 | 0.4 | 0.0 |
Identifiable assets | 1,832.3 |  | 1,832.3 |  | 0.0
Corporate |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Capital expenditures | 8.0 | $ 2.1 | 15.8 | $ 4.4 |
Identifiable assets | $ 1,778.0 |  | $ 1,778.0 |  | $ 1,134.4

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