Fair Value Measurements (Tables)

9 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of financial assets and liabilities by fair value hierarchy

Consistent with the three-level hierarchy defined in ASC Topic 820, Fair Value Measurement, as amended, we categorize our financial assets and liabilities as follows (in thousands):

		As of June 30, 2018		As of September 30, 2017
Assets
Foreign exchange contracts	Level 2	$	183	$	779
Interest rate caps	Level 2		7,734		5,178
Total assets		$	7,917	$	5,957
Liabilities
Foreign exchange contracts	Level 2	$	—	$	207

Schedule of other fair value disclosures

Other fair value disclosures

		As of June 30, 2018				As of September 30, 2017
		Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term debt
Senior notes	Level 1	$	950,000	$	889,115	$	950,000	$	973,750
Other long-term debt	Level 2		910,265		894,924		941,480		946,180
Total debt		$	1,860,265	$	1,784,039	$	1,891,480	$	1,919,930