Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Estimated Fair Value

Estimated Fair Value
(In millions)	Balance		Level 1		Level 2		Level 3
March 31, 2018
Assets
Government bonds	$	26	$	—	$	26	$	—
Derivative instruments - interest rate swaps	11		—		11		—
Total assets at fair value	$	37	$	—	$	37	$	—
Liabilities
Derivative instruments - interest rate swaps	$	6	$	—	$	6	$	—
Derivative instruments - CEC Convertible Notes	856		—		—		856
Disputed claims liability	102		—		—		102
Total liabilities at fair value	$	964	$	—	$	6	$	958
December 31, 2017
Assets
Equity securities	$	8	$	8	$	—	$	—
Government bonds	25		—		25		—
Total assets at fair value	$	33	$	8	$	25	$	—
Liabilities
Derivative instruments - CEC Convertible Notes	$	1,016	$	—	$	—	$	1,016
Disputed claims liability	112		—		—		112
Total liabilities at fair value	$	1,128	$	—	$	—	$	1,128

Changes in Level 3 Fair Value Measurements

Changes in Level 3 Fair Value Measurements
	Three Months Ended March 31, 2018
(In millions)	Derivative Instruments			Disputed Claims Liability
Balance as of beginning of period	$	1,016		$	112
Change in fair value recorded in Restructuring and support expenses and other	(160		)	(10		)
Balance as of end of period	$	856		$	102

Major Terms of Interest Rate Swap Agreements

The major terms of the interest rate swap agreements as of March 31, 2018 are as follows:

Effective Date	Notional Amount (In millions)	Fixed Rate Paid	Variable Rate Received as of March 31, 2018	Maturity Date
12/31/2018	250	2.274%	N/A	12/31/2022
12/31/2018	200	2.828%	N/A	12/31/2022
1/1/2019	250	2.153%	N/A	12/31/2020
1/1/2019	250	2.196%	N/A	12/31/2021
1/1/2019	400	2.788%	N/A	12/31/2021
1/1/2019	200	2.828%	N/A	12/31/2022
1/2/2019	250	2.172%	N/A	12/31/2020
1/2/2019	200	2.731%	N/A	12/31/2020