Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2011

Fair Value Measurements Tables [Abstract]

Fair Value, Measurement Inputs, Disclosure [Text Block]

		Level 1		Level 2		Level 3		Total

Assets:
Current derivative asset	$	-	$	93,922	$	-	$	93,922
Non-current derivative asset	$	-	$	10,785	$	-	$	10,785

Liabilities:
Non-current derivative liability	$	-	$	1,583	$	-	$	1,583

Schedule of Fair Value of Financial Instruments

		June 30, 2011				December 31, 2010
		Carrying		Estimated		Carrying		Estimated
		Amount		Fair Value		Amount		Fair Value

Long-Term Debt:

5.45% Notes due 2015, issued 2008	$	100,000	$	112,501	$	100,000	$	108,572
7.31% Notes due 2016, issued 2009		62,000		75,205		62,000		72,153
4.98% Notes due 2017, issued 2010		116,000		127,011		116,000		119,385
5.92% Notes due 2018, issued 2008		200,000		227,391		200,000		212,660
7.77% Notes due 2019, issued 2009		173,000		216,729		173,000		203,051
5.50% Notes due 2020, issued 2010		207,000		224,180		207,000		206,233
4.51% Notes due 2020, issued 2010		315,000		313,221		315,000		284,207
5.60% Notes due 2022, issued 2010		87,000		92,417		87,000		84,818
4.66% Notes due 2022, issued 2010		35,000		34,140		35,000		30,989
5.85% Notes due 2025, issued 2010		90,000		96,180		90,000		87,211
4.91% Notes due 2025, issued 2010		175,000		169,343		175,000		152,064

	$	1,560,000	$	1,688,318	$	1,560,000	$	1,561,343

- Definition

This element represents the disclosure related to the fair value measurement of assets and liabilities which includes [financial] instruments measured at fair value that are classified in stockholders' equity. Such assets and liabilities may be measured on a recurring or nonrecurring basis. The disclosures which may be required or desired include: (1) for assets and liabilities measured on a recurring basis, disclosure may include: (a) the fair value measurements at the reporting date; (b) 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 or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3); (c) for fair value measurements using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (i) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (ii) purchases, sales, issuances, and settlements (net); (iii) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs); (d) the amount of the total gains or losses for the period in subparagraph (c) (i) above included in earnings (or changes in net assets) that are attributable to the change in unrealized gains or losses relating to those assets and liabilities still held at the reporting date and a description of where those unrealized gains or losses are reported in the statement of income (or activities); (e) the valuation technique(s) used to measure fair value and a discussion of changes in valuation techniques, if any, during the period and (2) for assets and liabilities that are measured at fair value on a nonrecurring basis (for example, impaired assets) disclosure may include, in addition to (a) above: (a) the reasons for the fair value measurements recorded; (b) the same as (b) above; (c) for fair value measurements using significant unobservable inputs (Level 3), a description of the inputs and the information used to develop the inputs; and (d) the valuation technique(s) used to measure fair value and a discussion of changes, if any, in the valuation technique(s) used to measure similar assets and/or liabilities in prior periods.

+ References+ Details