Financial Instruments (Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments not Recorded at Fair Value) (Details) - USD ($) $ in Millions |
Sep. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Carrying Amount | ||
| Short-term Debt | $ 70 | $ 0 |
| Long-term debt, net | 1,356 | 1,435 |
| Estimated Fair Value | ||
| Unamortized debt issuance costs | 21 | 25 |
| Fair Value, Inputs, Level 2 [Member] | ||
| Estimated Fair Value | ||
| Short-term Debt, Fair Value | 70 | 0 |
| Long-term debt | 2,294 | 2,313 |
| Financial Instruments Not Recorded at Fair Value on a Recurring Basis - Long-term debt, net [Member] | ||
| Carrying Amount | ||
| Long-term debt, net | $ 1,355 | 1,434 |
| Convertible Debt [Member] | ||
| Estimated Fair Value | ||
| Debt Instrument, Interest Rate, Stated Percentage | 2.125% | |
| Unamortized debt discount | $ 291 | $ 308 |
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after accumulated amortization, of debt discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- References No definition available.
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. No definition available.
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- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date. No definition available.
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