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FAIR VALUE OF FINANCIAL INVESTMENTS AND LIABILITIES | 12 Months Ended
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Dec. 31, 2016
Fair Value Disclosures [Abstract] |
FAIR VALUE OF FINANCIAL INVESTMENTS AND LIABILITIES | FAIR VALUE OF FINANCIAL INVESTMENTS AND LIABILITIES Accounting Policy. We follow accounting guidance that defines fair value, establishes a framework for measuring fair value and prescribes disclosures about fair value measurements for financial investments and liabilities. The guidance defines fair value as "the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date." Further, it defines a fair value hierarchy, as follows: Level 1 inputs as quoted prices in active markets for identical assets or liabilities; Level 2 inputs as observable inputs other than Level 1 prices, such as quoted market prices for similar assets or liabilities or other inputs that are observable or can be corroborated by market data; and Level 3 inputs as unobservable inputs that are supported by little or no market activity and that are financial instruments whose value is determined using pricing models or instruments for which the determination of fair value requires significant management judgment or estimation. Financial investments that are available to be traded on readily accessible stock exchanges (domestic or foreign) are considered to have active markets and have been valued using Level 1 inputs. Financial investments that are not available to be traded on a public market or have limited secondary markets, or contain provisions that limit the ability to sell the investment are considered to have inactive markets and have been valued using Level 2 or 3 inputs. We incorporated credit risk into the valuations of financial investments by estimating the likelihood of non-performance by the counterparty to the applicable transactions. The estimate included the length of time relative to the contract, financial condition of the counterparty and current market conditions. The criteria for determining if a market was active or inactive were based on the individual facts and circumstances. E. FAIR VALUE OF FINANCIAL INVESTMENTS AND LIABILITIES (Continued) Financial Investments. We have maintained investments in available-for-sale securities, equity method investments, and a number of private equity funds and other private investments, principally as part of our tax planning strategies, as any gains enhance the utilization of any current and future tax capital losses. Financial investments included in other assets were as follows, in millions:
| At December 31
| 2016 |  | 2015
Auction rate securities | $ | — |  |  | $ | 22 |
Total recurring investments | — |  |  | 22 |
Equity method investments | 13 |  |  | 13 |
Private equity funds | 5 |  |  | 10 |
Other investments | — |  |  | 3 |
Total | $ | 18 |  |  | $ | 48 |
Auction Rate Securities. During 2016, all of our auction rate securities were called by our counterparties and redeemed at values that approximated our recorded basis. Our investments in available-for-sale securities included cost basis of $19 million and pre-tax unrealized gains of $3 million and had a recorded basis of $22 million at December 31, 2015. Equity Method Investments. Investments in private equity fund partnerships, joint ventures and less than majority-owned subsidiaries in which we have significant influence are accounted for under the equity method. Our consolidated statements of operations include our proportionate share of the net income (loss) of our equity method investees. When we record our proportionate share of net income (loss), it increases (decreases) our equity income in our consolidated statement of operations and our carrying value of that investment on our consolidated balance sheet. During the fourth quarter of 2014, we sold our investment in the private equity fund, Long Point Capital Fund II L.P. (accounted for as an equity method investment) for proceeds of $48 million, which approximated net book value. Such proceeds are included in the consolidated statements of cash flows in proceeds from other financial investments, in the investing activities section. Private Equity Funds and Other Investments. Our investments in private equity funds and other private investments, where we do not have significant influence, are carried at cost. During 2016, we abandoned our interest in a private investment, resulting in a $3 million loss recorded to our other investments. Recurring Fair Value Measurements. For financial investments measured at fair value on a recurring basis at each reporting period, the unrealized gains or losses (that are deemed to be temporary) are recognized, net of tax effect, through shareholders' equity, as a component of other comprehensive income (loss). Realized gains and losses and charges for other-than-temporary impairments are included in determining net income, with related purchase costs based upon specific identification. For the year ended December 31, 2016, all our Level 3 investments were redeemed due to the early redemption of all our auction rate securities which reduced our Level 3 investments by $22 million. Non-Recurring Fair Value Measurements. It is not practicable for us to estimate the fair value of equity method investments or private equity funds and other private investments where we do not have significant influence, because there are no quoted market prices and sufficient information is not readily available for us to utilize a valuation model to determine the fair value for each fund. Due to the significant unobservable inputs, the fair value measurements used to evaluate impairment are a Level 3 input. These investments are evaluated, on a non-recurring basis, for potential other-than-temporary impairment when impairment indicators are present, or when an event or change in circumstances has occurred, that may have a significant adverse effect on the fair value of the investment. There were no financial investments measured for impairment on a non-recurring basis during 2016, 2015 or 2014. We did not have any transfers between Level 1 and Level 2 financial assets in 2016 or 2015. E. FAIR VALUE OF FINANCIAL INVESTMENTS AND LIABILITIES (Concluded) Realized Gains (Losses). Income from financial investments, net, included in other, net, within other income (expense), net, was as follows, in millions:
| 2016 |  | 2015 |  | 2014
Realized gains from auction rate securities | $ | 3 |  |  | $ | — |  |  | $ | — |
Equity investment income (loss), net | 2 |  |  | 2 |  |  | (2 | )
Realized gains from private equity funds | 5 |  |  | 6 |  |  | 4 |
Loss from other investments | (3 | ) |  | — |  |  | — |
Income from financial investments, net | $ | 7 |  |  | $ | 8 |  |  | $ | 2 |
Fair value of debt. The fair value of our short-term and long-term fixed-rate debt instruments is based principally upon modeled market prices for the same or similar issues or the current rates available to us for debt with similar terms and remaining maturities. The aggregate estimated market value of short-term and long-term debt at December 31, 2016 was approximately $3.3 billion, compared with the aggregate carrying value of $3.0 billion. The aggregate estimated market value of short-term and long-term debt at December 31, 2015 was approximately $3.6 billion, compared with the aggregate carrying value of $3.4 billion.

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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 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: 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 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 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611 Reference 5: 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=73719730&loc=d3e13504-108611 Reference 6: 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=73719730&loc=d3e13433-108611 + Details
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