Net periodic benefit expense included in our Consolidated Statements of Operations, and other amounts recognized in our Consolidated Statements of Stockholders' Deficit, for the three and six months ended April 30, 2019 and 2018 are comprised of the following:



	Three Months Ended April 30,												Six Months Ended April 30,
	Pension Benefits						Health and Life Insurance Benefits						Pension Benefits						Health and Life Insurance Benefits
(in millions)	2019			2018			2019			2018			2019			2018			2019			2018
Service cost for benefits earned during the period	$	2		$	2		$	1		$	1		$	4		$	4		$	2		$	2
Interest on obligation	30			27			12			11			62			54			24			22
Amortization of cumulative loss	23			27			—			2			47			53			—			4
Settlements	—			—			—			—			142			9			—			—
Premiums on pension insurance	3			—			—			—			4			2			—			—
Expected return on assets	(35		)	(41		)	(6		)	(6		)	(73		)	(81		)	(11		)	(12		)
Net periodic benefit expense	$	23		$	15		$	7		$	8		$	186		$	41		$	15		$	16