Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Estimated Fair Value

(In millions)	Balance		Level 1		Level 2		Level 3
September 30, 2018
Assets
Government bonds	$	21	$	—	$	21	$	—
Derivative instruments - interest rate swaps	31		—		31		—
Total assets at fair value	$	52	$	—	$	52	$	—
Liabilities
Derivative instruments - CEC Convertible Notes	$	738	$	—	$	—	$	738
Disputed claims liability	73		—		—		73
Total liabilities at fair value	$	811	$	—	$	—	$	811

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

	Three Months Ended September 30, 2018						Nine Months Ended September 30, 2018
(In millions)	Derivative Instruments			Disputed Claims Liability			Derivative Instruments			Disputed Claims Liability
Balance as of beginning of period	$	831		$	86		$	1,016		$	112
Change in fair value recorded in Restructuring and support expenses and other	(97		)	(1		)	(282		)	(10		)
Change due to resolved claims in Disputed claims liability	4			(12		)	4			(29		)
Balance as of end of period	$	738		$	73		$	738		$	73

The major terms of the interest rate swap agreements as of September 30, 2018 are as follows:



Effective Date	Notional Amount (In millions)	Fixed Rate Paid	Variable Rate Received as of September 30, 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
12/31/2018	600	2.739%	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
1/2/2019	400	2.707%	N/A	12/31/2021