Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

Items Measured at Fair Value on a Recurring Basis

Investments

(In millions)	Balance		Level 1		Level 2		Level 3
June 30, 2015
Assets:
Equity securities	$	4	$	4	$	—	$	—
Government bonds	68		—		68		—
Total assets at fair value	$	72	$	4	$	68	$	—
December 31, 2014
Assets:
Equity securities	$	15	$	15	$	—	$	—
Government bonds	70		—		70		—
Total assets at fair value	$	85	$	15	$	70	$	—

Derivative Instruments, Gain (Loss) [Table Text Block]

Effect of Non-designated Derivative Instruments on Net Loss
(In millions)		Three Months Ended June 30,				Six Months Ended June 30,
Derivatives not designated as hedging instruments	Location of Loss Recognized in Net Loss	2015		2014		2015		2014
Net periodic cash settlements and accrued interest (1)	Interest expense	$	—	$	44	$	—	$	88
Total expense related to derivatives	Interest expense	—		—		7		9

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⁽¹⁾  The derivative settlements under the terms of the interest rate swap agreements were recognized as interest expense and were paid monthly or quarterly