Consolidated Statements of Stockholders' Equity (Unaudited) (USD $) In Millions	Additional Paid-in Capital [Member]	Earnings Invested In The Business [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Common Class A [Member]	Common Class B [Member]	Common Class A Treasury Stock [Member]	Common Class B Treasury Stock [Member]	Total
Balance at Jul. 01, 2012	$ 27.4	$ 678.3	$ 25.7	$ 36.6	$ 3.5	$ (62.6)	$ (0.6)
Other comprehensive income, net of tax			5.3					5.3
Net earnings		16.6						16.6
Dividends		(1.9)
Exercise of stock options, restricted stock and other	0.3
Exercise of stock options, restricted stock awards and other						0.1
Balance at Sep. 30, 2012	27.7	693.0	31.0	36.6	3.5	(62.5)	(0.6)	728.7
Balance at Jan. 01, 2012	28.8	657.5	16.2	36.6	3.5	(66.3)	(0.6)
Other comprehensive income, net of tax			14.8					14.8
Net earnings		41.2						41.2
Dividends		(5.7)
Exercise of stock options, restricted stock and other	(1.1)
Exercise of stock options, restricted stock awards and other						3.8
Balance at Sep. 30, 2012	27.7	693.0	31.0	36.6	3.5	(62.5)	(0.6)	728.7
Balance at Dec. 30, 2012	27.1	700.0	35.4	36.6	3.5	(61.0)	(0.6)	741.0
Other comprehensive income, net of tax			23.4					23.4
Net earnings		41.7						41.7
Dividends		(5.7)
Exercise of stock options, restricted stock and other	(1.0)
Exercise of stock options, restricted stock awards and other						4.1
Balance at Sep. 29, 2013	26.1	736.0	58.8	36.6	3.5	(56.9)	(0.6)	803.5
Balance at Jun. 30, 2013	28.9	719.1	49.8	36.6	3.5	(60.0)	(0.6)
Other comprehensive income, net of tax			9.0					9.0
Net earnings		18.8						18.8
Dividends		(1.9)
Exercise of stock options, restricted stock and other	(2.8)
Exercise of stock options, restricted stock awards and other						3.1
Balance at Sep. 29, 2013	$ 26.1	$ 736.0	$ 58.8	$ 36.6	$ 3.5	$ (56.9)	$ (0.6)	$ 803.5