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Retiree Benefits - Employer Matching Expense, Defined Benefit Contribution Expense, Pension Expense (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 26, 2012	Oct. 28, 2011	Oct. 29, 2010
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Employer matching expense	$ 12.2	$ 8.1	$ 6.7
Defined benefit contribution expense	30.6	22.3	17.8
Total pension expense for all defined be
Pension expense	$ 46.5	$ 50.3	$ 50.3

The amount of pension benefit costs recognized during the period for (1) defined benefit plans and (2) defined contribution plans. For defined benefit plans, pension expense includes the following components: service cost, interest cost, expected return on plan assets, gain (loss) on plan assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. For defined contribution plans, the pension expense generally equals the firm's contribution to employees' accounts (if the firm contributes) during the period.

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