Financial Instruments and Fair Value Measurement (Tables)

3 Months Ended

Dec. 31, 2012

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, 2012	$	129,183	$	304,185	$	—	$	433,368
Equity securities September 30, 2012	$	129,183	$	304,396	$	—	$	433,579

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, 2012:

			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	$	241,146	$	241,146	$	—	$	—
Equity securities	433,368		433,368		—		—
Other current assets	11,250		11,000		250		—
Other assets	2,000		2,000		—		—
Total assets measured at fair value	$	687,764	$	687,514	$	250	$	—

Summary of supplemental fair value information about fixed-rate debt

	December 31,		September 30,
	2012		2012
	(in thousands)
Carrying value of fixed-rate debt	$	235.0	$	235.0
Fair value of fixed-rate debt	$	247.4	$	252.7