Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock [Member]	Accumulated Other Comprehensive Income (loss) [Member]	Retained Earnings [Member]
Balance, shares at Jun. 30, 2012		93,500
Balance at Jun. 30, 2012	$ 1,851.0	$ 504.7	$ 39.4	$ 1,306.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	441.9	0.0	0.0	441.9
Other comprehensive income (loss)	37.6	$ 0.0	37.6	0.0
Issuance of Common Stock Under
Stock options, shares		400
Stock options, value	10.7	$ 10.7	0.0	0.0
Restricted stock plan, shares		400
Restricted stock plan (value)	0.0	$ 0.0	0.0	0.0
Compensation for stock options	6.1	6.1	0.0	0.0
Compensation for resticted stock	12.3	12.3	0.0	0.0
Cash dividends	(33.0)	0.0	0.0	(33.0)
Tax effect from stock transactions	17.1	$ 17.1	0.0	0.0
Repurchases of common stock, shares		(100)
Repurchases of common stock, value	(12.4)	$ (12.4)	0.0	0.0
Balance, shares at Jun. 29, 2013		94,100
Balance at Jun. 29, 2013	2,331.4	$ 538.5	77.0	1,715.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	205.3	0.0	0.0	205.3
Other comprehensive income (loss)	62.6	$ 0.0	62.6	0.0
Issuance of Common Stock Under
Stock Issued During Period, Shares, Acquisitions		39,400
Stock Issued During Period, Value, Acquisitions	6,117.2	$ 6,117.2	0.0	0.0
Stock options, shares		200
Stock options, value	9.8	$ 9.8	0.0	0.0
Restricted stock plan, shares		200
Restricted stock plan (value)	0.0		0.0	0.0
Compensation for stock options	6.5	$ 6.5	0.0	0.0
Compensation for resticted stock	18.1	18.1	0.0	0.0
Cash dividends	(46.1)	0.0	0.0	(46.1)
Tax effect from stock transactions	8.2	$ 8.2	0.0	0.0
Repurchases of common stock, shares		(100)
Repurchases of common stock, value	(7.5)	$ (7.5)	0.0	0.0
Equity issuance costs	(5.4)	(5.4)	0.0	0.0
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(7.2)	$ (7.2)	0.0	0.0
Balance, shares at Jun. 28, 2014		133,800
Balance at Jun. 28, 2014	8,692.9	$ 6,678.2	139.6	1,875.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	128.0	0.0	0.0	128.0
Other comprehensive income (loss)	(37.2)	$ 0.0	(37.2)	0.0
Issuance of Common Stock Under
Stock Issued During Period, Shares, New Issues		6,800
Stock Issued During Period, Value, New Issues	1,035.0	$ 1,035.0
Stock Issued During Period, Shares, Acquisitions		5,400
Stock Issued During Period, Value, Acquisitions	$ 904.9	$ 904.9	0.0	0.0
Stock options, shares	170	200
Stock options, value	$ 8.5	$ 8.5	0.0	0.0
Restricted stock plan, shares		200
Restricted stock plan (value)	0.0	$ 0.0	0.0	0.0
Compensation for stock options	6.9	6.9	0.0	0.0
Compensation for resticted stock	24.7	24.7	0.0	0.0
Cash dividends	(64.8)	0.0	0.0	(64.8)
Tax effect from stock transactions	7.0	$ 7.0	0.0	0.0
Repurchases of common stock, shares		(100)
Repurchases of common stock, value	(7.6)	$ (7.6)	0.0	0.0
Equity issuance costs	(35.7)	$ (35.7)	0.0	0.0
Balance, shares at Jun. 27, 2015		146,300
Balance at Jun. 27, 2015	10,662.6	$ 8,621.9	102.4	1,938.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	5.6	0.0	0.0	5.6
Other comprehensive income (loss)	$ (117.9)	$ 0.0	(117.9)	0.0
Issuance of Common Stock Under
Stock options, shares	72	100
Stock options, value	$ 4.9	$ 4.9	0.0	0.0
Restricted stock plan, shares		100
Restricted stock plan (value)	0.0	$ 0.0	0.0	0.0
Compensation for stock options	2.5	2.5	0.0	0.0
Compensation for resticted stock	22.3	22.3	0.0	0.0
Cash dividends	(36.3)	0.0	0.0	(36.3)
Tax effect from stock transactions	3.3	$ 3.3	0.0	0.0
Repurchases of common stock, shares		(100)
Repurchases of common stock, value	(10.3)	$ (10.3)	0.0	0.0
Stock Repurchased During Period, Shares		3,300
Proceeds from (Repurchase of) Equity	500.0	$ 500.0	0.0	0.0
Balance, shares at Dec. 31, 2015		143,100
Balance at Dec. 31, 2015	$ 10,036.7	$ 8,144.6	$ (15.5)	$ 1,907.6