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Derivatives (Tables)

12 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Values of Derivative Financial Instruments

The following table summarizes the fair values and the presentation of our derivative financial instruments (defined and discussed individually below) in the consolidated balance sheets:

			December 31,
	Balance Sheet Location		2017				2016
			(In millions)
Derivative asset:
1.125% Call Option	Current assets: Derivative asset		$	522			$	267
Derivative liability:
1.125% Conversion Option	Current liabilities: Derivative liability		$	522			$	267

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- References

No definition available.

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- Definition

Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

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