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Financial Instruments and Fair Value Measurement (Tables)

6 Months Ended

Mar. 31, 2017

Financial Instruments and Fair Value Measurement

Summary of available-for-sale securities

					Gross			Gross			Estimated
					Unrealized			Unrealized			Fair
		Cost			Gains			Losses			Value
		(in thousands)
Equity Securities:
March 31, 2017		$	38,473		$	36,159		$	—		$	74,632
September 30, 2016		$	38,473		$	33,051		$	—		$	71,524

Summary of assets measured at fair value on a recurring basis

The following table summarizes our assets measured at fair value presented in our Consolidated Condensed Balance Sheet as of March 31, 2017:

		Fair Value			(Level 1)			(Level 2)			(Level 3)
		(in thousands)
Recurring fair value measurements:
Short-term investments:
Certificate of deposit		$	3,099		$	—		$	3,099		$	—
Corporate and municipal debt securities			15,727			—			15,727			—
U.S. government and federal agency securities			29,185			25,195			3,990			—
Total short-term investments			48,011			25,195			22,816			—
Cash and cash equivalents			741,746			741,746			—			—
Investments			74,632			74,632			—			—
Other current assets			28,344			28,094			250			—
Other assets			2,000			2,000			—			—
Total assets measured at fair value		$	894,733		$	871,667		$	23,066		$	—

Summary of supplemental fair value information about long-term fixed-rate debt

		March 31,			September 30,
		2017			2016
		(in millions)
Carrying value of long-term fixed-rate debt		$	492.4		$	491.8
Fair value of long-term fixed-rate debt		$	523.7		$	529.6

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- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.

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