The following table summarizes Devon’s other expenses (income) presented in the accompanying consolidated comprehensive statements of earnings.


	Year Ended December 31,
	2022			2021			2020
Estimated future obligation under a performance guarantee	$	(144	)	$	(18	)	$	—
Ukraine charitable pledge		20			—			—
Asset retirement obligation accretion		25			28			20
Severance and other non-income tax refunds		(5	)		(39	)		(40	)
Other		9			(14	)		(14	)
Total	$	(95	)	$	(43	)	$	(34	)

Devon has guaranteed performance through 2026 for a minimum volume commitment associated with assets divested in 2018. In 2022, the purchaser of the assets was able to fully satisfy the $35 million performance obligation due in 2022 and repay Devon $44 million for shortfall payments paid by WPX and Devon in 2021 and 2020. Due to improved commodity prices, market conditions, and performance by the purchaser of the assets, Devon also reduced the estimated liability associated with this performance obligation by $65 million in 2022. The effect of these cash collections and liability revisions resulted in a $144 million total benefit in 2022.

During 2022, Devon paid approximately $20 million for humanitarian relief for the Ukrainian people and surrounding countries supporting refugees.

During 2022, 2021 and 2020, Devon received severance and other non-income tax refunds of $5 million, $39 million and $40 million, respectively, related to prior periods.