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Stock Compensation - Consolidated Stock Compensation Expense (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 31, 2013	Apr. 01, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock compensation expense	$ 15.7	$ 7.3	$ 22.2	$ 11.8
Less:
Related tax benefit	0.2		0.5
Noncontrolling interest	4.9	2.9	6.3	4.9
Net	$ 10.6	$ 4.4	$ 15.4	$ 6.9

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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