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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Investment Assets

The Company's investment assets are carried at fair value on the consolidated balance sheets as summarized in the following table. All of the inputs used to determine the fair value of the Company's investments are Level 2 inputs. The amortized cost basis of these investments was $903 million and $340 million as of March 31, 2019 and December 31, 2018, respectively.

(Dollars in Millions)	March 31, 2019			December 31, 2018
Certificates of Deposit and Commercial Paper	$	813		$	250
Corporate Bonds	59			56
Government Securities	34			35
Total investments at fair value	$	906		$	341

Schedule of Investment Maturities

These investments have the following maturities:

(Dollars in millions)	March 31, 2019				December 31, 2018
Less than 1 year	$	822			$	253
1 - 5 years	8				14
5 - 10 years	24				26
Greater than 10 years	52				48
Total investments at fair value	$	906			$	341

Schedule of Fair Value and Carrying Value of Long-Term Debt

The fair value and carrying value of the Company's long-term debt is as follows:

(Dollars in millions)	March 31, 2019				December 31, 2018
Long-term Debt (Including Current Maturities):
Fair Value	$	16,791			$	14,914
Carrying Value	15,766				14,757

X

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by 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 (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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-Subparagraph (a)
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Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

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-Publisher FASB
-Name Accounting Standards Codification
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Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

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