Financial Instruments and Fair Value Measurement (Tables)

3 Months Ended

Dec. 31, 2014

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 December 31, 2014	$	64,462	$	88,947	$	—	$	153,409
Equity securities September 30, 2014	$	64,462	$	157,838	$	—	$	222,300

Summary of assets measured at fair value on a recurring basis

The following table summarizes our assets measured at fair value on a recurring basis presented in our Consolidated Condensed Balance Sheet as of December 31, 2014:

			Quoted Prices
	Total		in Active		Significant
	Measure		Markets for		Other		Significant
	at		Identical		Observable		Unobservable
	Fair		Assets		Inputs		Inputs
	Value		(Level 1)		(Level 2)		(Level 3)
	(in thousands)
Assets:
Cash and cash equivalents	$	251,636	$	251,636	$	—	$	—
Equity securities	153,409		153,409		—		—
Other current assets	36,386		36,136		250		—
Other assets	2,000		2,000		—		—
Total assets measured at fair value	$	443,431	$	443,181	$	250	$	—

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

	December 31,		September 30,
	2014		2014
	(in millions)
Carrying value of long-term fixed-rate debt	$	80.0	$	80.0
Fair value of long-term fixed-rate debt	$	82.5	$	84.3