Consolidated and Combined Statements of Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
Sep. 25, 2015	Sep. 26, 2014	Sep. 27, 2013
Income Statement [Abstract]
Tax (benefit) expense on income (loss) from discontinued operations	$ 11.5	$ (34.7)	$ 21.1

- Definition

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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