Awards Granted, Weighted-Average Exercise Price, Weighted-Average Fair Value and Weighted-Average Assumptions Used in the Calculation of Compensation Expense (Detail) (USD $)	3 Months Ended
Jan. 01, 2012	Jan. 02, 2011
Restricted shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards	523,800	1,686,311
Fair value per award	$ 16.27	$ 20.96
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards	350,000
Fair value per award	$ 17.77
Stock options and share appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards		3,012,245
Exercise price per award		$ 13.88
Fair value per award		$ 7.12
Risk Free Rate		0.20%
Expected Dividend Yield		0.00%
Expected Life (Years)		1.1
Expected Volatility		41.90%

The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The number of shares newly issued during the reporting period under the plan.

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