Other Liabilities

Other current liabilities as of December 31, 2018 and 2017 are detailed below:



	December 31,
	2018		2017
	($ in millions)
Revenues and royalties due others	$	687	$	612
Accrued drilling and production costs	258		216
Joint interest prepayments received	73		74
Accrued compensation and benefits	202		214
Other accrued taxes	108		43
Other	212		296
Total other current liabilities	$	1,540	$	1,455

Other long-term liabilities as of December 31, 2018 and 2017 are detailed below:



	December 31,
	2018		2017
	($ in millions)
CHK Utica ORRI conveyance obligation^(a)	$	—	$	156
Unrecognized tax benefits	53		101
Other	103		97
Total other long-term liabilities	$	156	$	354

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(a)

In 2018, we repurchased previously conveyed ORRI from the CHK Utica, L.L.C. investors and extinguished our obligation to convey future ORRIs to the CHK Utica, L.L.C. investors for combined consideration of $199 million. The total CHK Utica ORRI conveyance obligation extinguished in 2018 was $183 million, of which, $30 million was recorded in current liabilities and $153 million was recorded in long-term liabilities. The fair value of the consideration allocated to the extinguishment of liability, $122 million, was less than the carrying amount of the conveyance obligation and resulted in a gain of $61 million recognized in other income on our consolidated statement of operations. The fair value of the consideration allocated to the purchase of ORRIs on proved producing properties was $77 million and recorded in proved oil and natural gas properties in our consolidated balance sheet.