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Goodwill and Intangible Assets (Tables) | 6 Months Ended
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Apr. 03, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets Excluding Goodwill | Intangible assets consist of the following (in millions):
|  | As of |  | As of
| Weighted Average Amortization Period Remaining (Years) | April 3, 2015 |  | October 3, 2014
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships | 1.5 | $ | 57.2 |  |  | $ | (44.2 | ) |  | $ | 13.0 |  |  | $ | 57.2 |  |  | $ | (39.4 | ) |  | $ | 17.8 |
Developed technology and other | 2.1 | 96.2 |  |  | (52.6 | ) |  | 43.6 |  |  | 96.2 |  |  | (40.6 | ) |  | 55.6 |
Trademarks | Indefinite | 1.6 |  |  | — |  |  | 1.6 |  |  | 1.6 |  |  | — |  |  | 1.6 |
Total intangible assets |  | $ | 155.0 |  |  | $ | (96.8 | ) |  | $ | 58.2 |  |  | $ | 155.0 |  |  | $ | (80.0 | ) |  | $ | 75.0 |
Schedule Of Expected Annual Amortization Expense Related To Intangible Assets For The Next Five Years | Annual amortization expense for the next five years related to intangible assets is expected to be as follows (in millions):
| Remaining 2015 |  | 2016 |  | 2017 |  | 2018 |  | 2019 |  | Thereafter
Amortization expense | $ | 16.4 |  |  | $ | 28.3 |  |  | $ | 11.9 |  |  | $ | — |  |  | $ | — |  |  | $ | — |

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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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