ASSET IMPAIRMENTS

6 Months Ended

Jun. 30, 2020

We did not impair any of our long-lived assets during the three-month period ended June 30, 2020, but recorded a $1.7 billion impairment during the three-month period ended March 31, 2020. Our impairments of long-lived assets were triggered by the sharp drop in commodity prices due to decreased demand for oil and natural gas products as a result of the Coronavirus Disease 2019 (COVID-19) pandemic coupled with the over-supply resulting from a price war between members of the Organization of the Petroleum Exporting Countries (OPEC) and Russia and other allied producing countries. The following table presents a summary of our asset impairments:


	Six months ended
	June 30, 2020
	(in millions)
Proved oil and natural gas properties	$	1,487
Unproved properties	228
Unrecovered capital costs	11
Inventory	7
Other	3
Total	$	1,736

Proved oil and natural gas properties — The fair values of our proved oil and natural gas properties were determined as of the date of the assessment using discounted cash flow models incorporating a number of fair value inputs which are categorized as Level 3 on the fair value hierarchy. These inputs were based on management's expectations for the future considering the current environment and included index prices based on forward curves until the market became illiquid and internally generated price forecasts thereafter, pricing adjustments for differentials, estimates of future oil and natural gas production, estimated future operating costs and capital development plans based on the embedded price assumptions. We used a market-based weighted average cost of capital to discount the future net cash flows. The impairment charge primarily related to a steamflood property located in the San Joaquin basin.

Unproved properties — We determined our ability to develop our unproved properties was constrained for the foreseeable future. Accordingly, we do not intend to develop these assets and impaired all of our unproved properties in the first quarter of 2020, which primarily consist of leases held by production in the San Joaquin basin. Unrecovered capital costs — Net amounts due from joint interest partners, which are included in other current assets on our condensed consolidated balance sheet, include amounts for capital and operating costs incurred by us that are recoverable solely from our partners' share of future production from associated fields. The dramatic commodity price decline during the first quarter of 2020 resulted in changes to our cash flow forecasts and we impaired the carrying value of these assets.