Acquisitions and divestitures (2014 Acquisitions) (Details) (USD $)	9 Months Ended	12 Months Ended
Mar. 29, 2014	Jun. 28, 2014 item
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 116,882,000
Contingent consideration
Contingent consideration	38,100,000
2014 Acquisitions [Member]
Business Acquisition [Line Items]
Number of businesses acquired		3
Business acquisition, aggregate annualized revenue of acquired businesses		492,000,000
Payments to Acquire Businesses, Net of Cash Acquired		116,900,000
Contingent consideration
Payments to Acquire Businesses, Gross		181,645,000
Contingent consideration		38,081,000
Total consideration		219,726,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		$ 50,000,000

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Total revenue reported by the acquired entity for its previous full fiscal year before the business acquisition.

+ References

No definition available.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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-Publisher FASB

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- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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- Definition

The number of businesses acquired by the entity during the period.

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No definition available.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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