Asset Impairments and Unusual Items	6 Months Ended
Jun. 30, 2019
Asset Impairments and Unusual Items
Asset Impairments and Unusual Items	10. Asset Impairments and Unusual Items (Gain) Loss from Divestitures, Asset Impairments and Unusual Items, Net During the six months ended June 30, 2018, we sold certain ancillary operations resulting in net gains of $42 million. Other, Net During the first quarter of 2019, we recognized a $52 million impairment charge related to our minority-owned investment in a waste conversion technology business. We wrote down our investment to its estimated fair value as the result of recent third-party investor’s transactions in these securities. The fair value of our investment was not readily determinable; thus, we determined the fair value utilizing a combination of quoted price inputs for the equity in our investment (Level 2) and certain management assumptions pertaining to investment value (Level 3).

Asset Impairments and Unusual Items

6 Months Ended

Jun. 30, 2019

10. Asset Impairments and Unusual Items

(Gain) Loss from Divestitures, Asset Impairments and Unusual Items, Net

During the six months ended June 30, 2018, we sold certain ancillary operations resulting in net gains of $42 million.

Other, Net

During the first quarter of 2019, we recognized a $52 million impairment charge related to our minority-owned investment in a waste conversion technology business. We wrote down our investment to its estimated fair value as the result of recent third-party investor’s transactions in these securities. The fair value of our investment was not readily determinable; thus, we determined the fair value utilizing a combination of quoted price inputs for the equity in our investment (Level 2) and certain management assumptions pertaining to investment value (Level 3).