Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Measurements

Assets and liabilities measured at fair value on a recurring basis

The following tables provide fair value measurement information for such assets and liabilities that are measured on a recurring basis as of March 31, 2018, and December 31, 2017 (in millions):

Fair Value Measurements at March 31, 2018:
							Netting and		Total  Fair
Embedded derivatives	Level 1		Level 2		Level 3		Collateral		Value
Liabilities:
Accrued liabilities	$	—	$	31	$	—	$	—	$	31
Deferred credits and liabilities	$	—	$	125	$	—	$	—	$	125

Fair Value Measurements at December 31, 2017:
							Netting and		Total   Fair
Embedded derivatives	Level 1		Level 2		Level 3		Collateral		Value
Liabilities:
Accrued liabilities	$	—	$	39	$	—	$	—	$	39
Deferred credits and liabilities	$	—	$	147	$	—	$	—	$	147