Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of inventory by costing method [Table Text Block]

The following table sets forth the Company’s inventories as of December 31, 2020 and 2019.

	December 31, 2020		December 31, 2019
	(In millions)
LIFO inventories
FIFO value	$	—	$	1,022
LIFO valuation reserve	—		(91)
LIFO inventories carrying value	—		931
FIFO inventories	3,310		3,106
Market inventories	7,941		4,704
Supplies and other inventories	462		429
Total inventories	$	11,713	$	9,170