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Business Combinations (Details) (Sinclair Knight Merz [Member], USD $) | 0 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 13, 2013 | Mar. 28, 2014 | Mar. 29, 2013
Business Acquisition [Line Items] |  |  |
Payments to acquire business | $ 1,200,000,000 |  |
Enterprise value plus adjustments for cash, debt and other items. | 1,100,000,000 |  |
Acquisition-related costs |  | 16,400,000 |
Acquired receivables | 304,600,000 |  |
Adjustment to pro forma earnings |  | 183,000,000 | 220,000,000
Pro forma intangible asset amortization |  | 11,900,000 | 13,300,000
Pro forma interest expense |  | 2,600,000 | 3,200,000
Loss from settlement related to shareholding plan provisions |  | 24,000,000 |
Selling, General and Administrative Expenses [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Acquisition-related costs |  | 9,000,000 |
Minimum [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Useful life of intangibles |  | 3 years |
Maximum [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Useful life of intangibles |  | 12 years |
Acquisition-related Costs [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Adjustment to pro forma earnings |  | 21,100,000 | (22,700,000)
Interest Expense [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Adjustment to pro forma earnings |  | 600,000 | 2,300,000
Intangible Asset Amortization [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Adjustment to pro forma earnings |  | $ 3,500,000 | $ 10,400,000

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- Definition Business Combination, Pro Forma Information, Earnings or Loss of Acquiree from Settlement Related to Shareholding Plan Provisions + References No definition available. + Details
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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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