Financial Instruments and Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2011

Financial Instruments and Fair Value Measurements [Abstract]

Fair Value of Financial Instruments

			Basis of Fair Value Measurement
	September 30,		Quoted Prices in		Significant
	2011		Active Markets		Other		Significant
	Carrying		for Identical		Observable		Unobservable
	Value		Assets (Level 1)		Inputs (Level 2)		Inputs (Level 3)
Assets
Institutional money market investments	$	189,198	$	189,198	$	—	$	—
Forward exchange contracts		37,198		—		37,198		—
Interest rate swaps		5,959		—		5,959		—
Total Assets	$	232,355	$	189,198	$	43,157	$	—
Liabilities
Forward exchange contracts	$	39,589	$	—	$	39,589	$	—
Long-term debt		2,484,665		—		2,839,697		—
Total Liabilities	$	2,524,254	$	—	$	2,879,286	$	—

			Basis of Fair Value Measurement
	September 30,		Quoted Prices in		Significant
	2010		Active Markets		Other		Significant
	Carrying		for Identical		Observable		Unobservable
	Value		Assets (Level 1)		Inputs (Level 2)		Inputs (Level 3)
Assets
Institutional money market investments	$	277,424	$	277,424	$	—	$	—
Forward exchange contracts		32,392		—		32,392		—
Interest rate swaps		8,609		—		8,609		—
Total Assets	$	318,425	$	277,424	$	41,001	$	—
Liabilities
Forward exchange contracts	$	21,265	$	—	$	21,265	$	—
Long-term debt		1,495,357		—		1,790,137		—
Total Liabilities	$	1,516,622	$	—	$	1,811,402	$	—