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Fair Value Measurements | 12 Months Ended
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Dec. 31, 2014
Fair Value Measurements |
Fair Value Measurements | Note 8 Fair Value Measurements Fair value is the price that would be received upon sale of an asset or paid upon transfer of a liability in an orderly transaction between market participants at the measurement date (exit price). We utilize market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs can be readily observable, market-corroborated, or generally unobservable. We primarily apply the market approach for recurring fair value measurements and endeavor to utilize the best information available. Accordingly, we employ valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. The use of unobservable inputs is intended to allow for fair value determinations in situations where there is little, if any, market activity for the asset or liability at the measurement date. We are able to classify fair value balances utilizing a fair value hierarchy based on the observability of those inputs. Under the fair value hierarchy:
• | Level 1 measurements include unadjusted quoted market prices for identical assets or liabilities in an active market;
• | Level 2 measurements include quoted market prices for identical assets or liabilities in an active market that have been adjusted for items such as effects of restrictions for transferability and those that are not quoted but are observable through corroboration with observable market data, including quoted market prices for similar assets; and
• | Level 3 measurements include those that are unobservable and of a subjective nature.
The following table sets forth, by level within the fair value hierarchy, our financial assets and liabilities that are accounted for at fair value on a recurring basis as of December 31, 2014. Our debt securities could transfer into or out of a Level 1 or 2 measure depending on the availability of independent and current pricing at the end of each quarter. During 2014, there were no transfers of our financial assets between Level 1 and Level 2 measures. Our financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.
|  | Fair Value as of December 31, 2014 |
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total |
|  | (In thousands) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale equity securities from energy industry |  | $ | 35,002 |  | $ | — |  | $ | — |  | $ | 35,002 |
Available-for-sale debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-CMO debt securities |  |  | — |  |  | 18 |  |  | — |  |  | 18 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total short-term investments |  | $ | 35,002 |  | $ | 18 |  | $ | — |  | $ | 35,020 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nonrecurring Fair Value Measurements Fair value measurements were applied with respect to our nonfinancial assets and liabilities measured on a nonrecurring basis, which would consist of measurements primarily to assets held for sale, goodwill, intangible assets and other long-lived assets, assets acquired and liabilities assumed in a business combination and our pipeline contractual commitment. Fair Value of Financial Instruments The fair value of our financial instruments has been estimated in accordance with GAAP. The fair value of our long-term debt, revolving credit facility, commercial paper and subsidiary preferred stock is estimated based on quoted market prices or prices quoted from third-party financial institutions. The carrying and fair values of these liabilities were as follows:
|  | As of December 31, |
|  | 2014 |  | 2013 |
|  | Effective Interest Rate |  | Carrying Value |  | Fair Value |  | Effective Interest Rate |  | Carrying Value |  | Fair Value |
|  | (In thousands, except interest rates) |
2.35% senior notes due September 2016 |  |  | 2.56 | % | $ | 349,887 |  | $ | 346,980 |  |  | 2.56 | % | $ | 349,820 |  | $ | 354,694 |
6.15% senior notes due February 2018 |  |  | 6.42 | % |  | 930,693 |  |  | 991,920 |  |  | 6.42 | % |  | 969,928 |  |  | 1,097,480 |
9.25% senior notes due January 2019 |  |  | 9.33 | % |  | 339,607 |  |  | 403,531 |  |  | 9.33 | % |  | 339,607 |  |  | 428,733 |
5.00% senior notes due September 2020 |  |  | 5.20 | % |  | 698,253 |  |  | 687,953 |  |  | 5.20 | % |  | 697,947 |  |  | 731,955 |
4.625% senior notes due September 2021 |  |  | 4.75 | % |  | 698,388 |  |  | 661,619 |  |  | 4.75 | % |  | 698,148 |  |  | 709,793 |
5.10% senior notes due September 2023 |  |  | 5.26 | % |  | 348,893 |  |  | 332,759 |  |  | 5.26 | % |  | 348,765 |  |  | 349,731 |
Subsidiary preferred stock |  |  | 0.00 | % |  | — |  |  | — |  |  | 4.00 | % |  | 69,188 |  |  | 69,000 |
Revolving credit facility |  |  | 3.47 | % |  | 450,000 |  |  | 450,000 |  |  | 2.28 | % |  | 170,000 |  |  | 170,000 |
Commercial paper |  |  | 0.59 | % |  | 533,119 |  |  | 533,119 |  |  | 0.45 | % |  | 329,844 |  |  | 329,844 |
Other |  |  | 0.00 | % |  | 6,209 |  |  | 6,209 |  |  | 0.00 | % |  | 10,243 |  |  | 10,243 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  |  |  | $ | 4,355,049 |  | $ | 4,414,090 |  |  |  |  | $ | 3,983,490 |  | $ | 4,251,473 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
The fair values of our cash equivalents, trade receivables and trade payables approximate their carrying values due to the short-term nature of these instruments. As of December 31, 2014, our short-term investments were carried at fair market value and included $35.0 million in securities classified as available-for-sale. As of December 31, 2013, our short-term investments were carried at fair market value and included $117.2 million in securities classified as available-for-sale.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13504-108611 + Details
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