Earnings per share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Dec. 27, 2014	Dec. 28, 2013	Dec. 27, 2014	Dec. 28, 2013
Numerator:
Net income	$ 163,706us-gaap_NetIncomeLoss	$ 124,864us-gaap_NetIncomeLoss	$ 291,652us-gaap_NetIncomeLoss	$ 245,488us-gaap_NetIncomeLoss
Denominator:
Weighted average common shares for basic earnings per share	136,541,000	137,702,000	137,425,000	137,558,000
Net effect of dilutive stock option, restricted stock and performance share awards	2,431,000	2,442,000	2,486,000	2,376,000
Weighted average common shares for diluted earnings per share	138,972,000	140,144,000	139,911,000	139,934,000
Basic earnings per share	$ 1.20us-gaap_EarningsPerShareBasic	$ 0.91us-gaap_EarningsPerShareBasic	$ 2.12us-gaap_EarningsPerShareBasic	$ 1.78us-gaap_EarningsPerShareBasic
Diluted earnings per share	$ 1.18us-gaap_EarningsPerShareDiluted	$ 0.89us-gaap_EarningsPerShareDiluted	$ 2.08us-gaap_EarningsPerShareDiluted	$ 1.75us-gaap_EarningsPerShareDiluted
Stock options excluded from earnings per share calculation due to anti-dilutive effect	0	0	0	0

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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