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(1) Operating income for the E&P segment includes $11 million of restructuring charges for the year ended December 31, 2019. 

(2) Interest expense and the provision (benefit) for income taxes by segment are an allocation of corporate amounts as they are incurred at the corporate level. 

(3) E&P assets includes office, technology, water infrastructure, drilling rigs and other ancillary equipment not directly related to natural gas and oil properties. This also includes deferred tax assets which are an allocation of corporate amounts as they are incurred at the corporate level. 

(4) Other assets represent corporate assets not allocated to segments and assets for non-reportable segments. At December 31, 2019, 2018 and 2017, other assets included approximately $5 million, $205 million and $914 million, respectively, in cash and cash equivalents, $30 million, $89 million and $89 million, respectively, in income taxes receivable, $27 million, $60 million and $95 million, respectively, in property, plant and equipment, $11 million, $11 million and $5 million, respectively, in unamortized debt expense, $8 million, $8 million and $11 million, respectively, in prepayments and $7 million, $8 million and $10 million, respectively, in a non-qualified retirement plan. Additionally, the December 31, 2019 asset balance includes $80 million in right-of-use lease assets and the December 31, 2018 asset balance includes $4 million of accounts receivable and $1 million of current hedging assets. 

(5) Capital investments include an increase of $34 million for 2019 and a decrease of $53 million for 2018 related to the change in accrued expenditures between years. There was no impact to 2017. 

(6) Includes the impact of approximately eleven months of Fayetteville Shale-related E&P and midstream gathering operations which were divested in December 2018. 

(7) Operating income for the E&P segment includes $37 million related to restructuring charges for the year ended December 31, 2018. 

