Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Millions, unless otherwise specified	Sep. 29, 2012	Jun. 30, 2012
Other assets:
Total assets	$ 20.2	$ 19.6
Accrued expenses:
Total liabilities	205.7	218.2
Fair Value, Measurements, Recurring [Member]
Other assets:
Money market mutual funds	3.0	3.2
Equity and fixed income mutual funds	21.0	18.9
Cash surrender value of life insurance policies	13.3	13.0
Total assets	37.3	35.1
Accrued expenses:
Derivative financial instruments	1.7	1.4
Total liabilities	1.7	1.4
Quoted Prices in Active Market for Identical Assets (Level 1) [Member]
Other assets:
Total assets	20.2	19.6
Accrued expenses:
Total liabilities	0	0
Quoted Prices in Active Market for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Other assets:
Money market mutual funds	3.0	3.2
Equity and fixed income mutual funds	21.0	18.9
Cash surrender value of life insurance policies	0	0
Total assets	24.0	22.1
Accrued expenses:
Derivative financial instruments	0	0
Total liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member]
Other assets:
Total assets	0	0
Accrued expenses:
Total liabilities	205.7	218.2
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Other assets:
Money market mutual funds	0	0
Equity and fixed income mutual funds	0	0
Cash surrender value of life insurance policies	13.3	13.0
Total assets	13.3	13.0
Accrued expenses:
Derivative financial instruments	1.7	1.4
Total liabilities	$ 1.7	$ 1.4