Properties, Plants and Equipment

6 Months Ended

Jun. 30, 2021

Property, Plant and Equipment [Abstract]

Properties, Plants and Equipment

Properties, Plants and Equipment

Our gross investment in properties, plants and equipment (PP&E) and the associated accumulated depreciation and amortization (Accum. D&A) balances were as follows:

	Millions of Dollars
	June 30, 2021				December 31, 2020
	Gross PP&E		Accum. D&A	Net PP&E	Gross PP&E	Accum. D&A	Net PP&E
Midstream	$	12,289	2,885	9,404	12,313	2,815	9,498
Chemicals	—		—	—	—	—	—
Refining	25,293		12,569	12,724	24,647	12,019	12,628
Marketing and Specialties	1,805		1,023	782	1,815	1,007	808
Corporate and Other	1,485		707	778	1,448	666	782
	$	40,872	17,184	23,688	40,223	16,507	23,716