Derivative Instruments and Fair Value Measurement (Tables)

12 Months Ended

Sep. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)

The pre-tax amount of gains recorded in other comprehensive (loss) income related to cash flow hedges that would have been recorded in the Consolidated Statement of Operations had they not been so designated was (in millions):

	2015		2014		2013
Forward exchange contracts	$	41.7	$	16.9	$	1.8

Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location

The pre-tax amount of (losses) gains reclassified from accumulated other comprehensive loss into the Consolidated Statement of Operations related to derivative forward exchange contracts designated as cash flow hedges, which offset the related gains and losses on the hedged items during the periods presented, was (in millions):

	2015			2014			2013
Sales	$	(8.4	)	$	(2.3	)	$	1.6
Cost of sales	44.6			0.7			4.9
Total	$	36.2		$	(1.6	)	$	6.5

Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss)

The pre-tax amount of (losses) gains recorded in other comprehensive (loss) income related to net investment hedges that would have been recorded in the Consolidated Statement of Operations had they not been so designated was (in millions):

	2015			2014			2013
Forward exchange contracts	$	(4.4	)	$	—		$	—
Foreign currency denominated debt	1.0			(0.3		)	0.2
Total	$	(3.4	)	$	(0.3	)	$	0.2

Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location

The pre-tax amount of net gains recognized within the Consolidated Statement of Operations related to derivative instruments designated as fair value hedges, which fully offset the related net losses on the hedged debt instruments during the periods presented, was (in millions):

	2015		2014		2013
Interest expense	$	5.4	$	—	$	—

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location

The pre-tax amount of gains from forward exchange contracts not designated as hedging instruments recognized in the Consolidated Statement of Operations was (millions):

	2015		2014		2013
Other (expense) income	$	20.8	$	1.4	$	0.1

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

Assets (liabilities) measured at fair value on a recurring basis and their location in our Consolidated Balance Sheet were (in millions):

		Fair Value (Level 2)
Derivatives Designated as Hedging Instruments	Balance Sheet Location	September 30, 2015			September 30, 2014
Forward exchange contracts	Other current assets	$	32.6		$	13.1
Forward exchange contracts	Other assets	1.7			5.0
Forward exchange contracts	Other current liabilities	(13.3		)	(4.1		)
Forward exchange contracts	Other liabilities	(2.1		)	(0.3		)
Interest rate swap contracts	Other assets	5.4			—
Total		$	24.3		$	13.7

		Fair Value (Level 2)
Derivatives Not Designated as Hedging Instruments	Balance Sheet Location	September 30, 2015			September 30, 2014
Forward exchange contracts	Other current assets	$	20.3		$	3.5
Forward exchange contracts	Other current liabilities	(3.1		)	(1.8		)
Total		$	17.2		$	1.7

Fair Value, by Balance Sheet Grouping

The following table presents the carrying amounts and estimated fair values of financial instruments not measured at fair value in the Consolidated Balance Sheet (in millions):

	September 30, 2015
			Fair Value
	Carrying Amount		Total		Level 1		Level 2		Level 3
Cash and cash equivalents	$	1,427.3	$	1,427.3	$	1,412.1	$	15.2	$	—
Short-term investments	721.9		721.9		—		721.9		—
Short-term debt	—		—		—		—		—
Long-term debt	1,500.9		1,682.6		—		1,682.6		—

	September 30, 2014
			Fair Value
	Carrying Amount		Total		Level 1		Level 2		Level 3
Cash and cash equivalents	$	1,191.3	$	1,191.3	$	1,154.2	$	37.1	$	—
Short-term investments	628.5		628.5		—		628.5		—
Short-term debt	325.0		325.0		—		325.0		—
Long-term debt	900.4		1,119.4		—		1,119.4		—