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Restructuring and Divestiture Charges - Charges Taken Related to Restructuring Actions (Detail) - Restructuring - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
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Apr. 01, 2017 | Sep. 24, 2016
Two Thousand Sixteen [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve |  | $ 6.3
Year Two Thousand Sixteen [Domain] |  |
Restructuring Cost and Reserve [Line Items] |  |
Reduction Of Workforce Expenses |  | 10.5
Fiscal restructuring charges |  | 10.5
Two Thousand Seventeen [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | $ 5.5 |
Severance Costs | 1.3 |
Facility Closure Costs | 3.5 |
Fiscal restructuring charges | 4.8 |
Fiscal 2017 Actions [Member] | Two Thousand Sixteen [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve |  | 0.0
Fiscal 2017 Actions [Member] | Year Two Thousand Sixteen [Domain] |  |
Restructuring Cost and Reserve [Line Items] |  |
Reduction Of Workforce Expenses |  | 0.0
Fiscal restructuring charges |  | 0.0
Fiscal 2017 Actions [Member] | Two Thousand Seventeen [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | 1.5 |
Severance Costs | 1.5 |
Facility Closure Costs | 0.0 |
Fiscal restructuring charges | 1.5 |
Fiscal 2016 Actions [Domain] | Two Thousand Sixteen [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve |  | 5.5
Fiscal 2016 Actions [Domain] | Year Two Thousand Sixteen [Domain] |  |
Restructuring Cost and Reserve [Line Items] |  |
Reduction Of Workforce Expenses |  | 10.5
Fiscal restructuring charges |  | 10.5
Fiscal 2016 Actions [Domain] | Two Thousand Seventeen [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | 3.6 |
Severance Costs | (0.2) |
Facility Closure Costs | 3.5 |
Fiscal restructuring charges | 3.3 |
Fiscal 2015 Actions | Two Thousand Sixteen [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve |  | 0.2
Fiscal 2015 Actions | Two Thousand Seventeen [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | 0.0 |
Fiscal 2014 Actions | Two Thousand Sixteen [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve |  | $ 0.6
Fiscal 2014 Actions | Two Thousand Seventeen [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Reserve | $ 0.4 |

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- Definition Represents charges incurred to close or restructure a facility in connection with an exit or disposal activity. Such costs include clean-up costs and lease obligations. Costs are recorded as the activities are incurred except for lease obligation charges, which are recorded upon termination of the lease obligation or at the cease use date. + References No definition available. + Details
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- Definition Represents severance and related benefit charges for the termination of employees under an exit or disposal activity. Charges are recorded either as one-time termination benefits, which are recognized ratable over the required service period to receive such benefit, or under an ongoing benefit plan arrangement once the charge is probable and reasonably estimable. + References No definition available. + Details
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- Definition Total restructuring charges under exit or disposal plan. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 + Details
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