PROPERTY, PLANT AND EQUIPMENT

3 Months Ended

Mar. 31, 2022

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT

NOTE 6 - PROPERTY, PLANT AND EQUIPMENT

The following table indicates the carrying value of each of the major classes of our depreciable assets:

	(In Millions)
	March 31, 2022		December 31, 2021
Land, land improvements and mineral rights	$	1,397	$	1,291
Buildings	907		889
Equipment	8,691		8,709
Other	233		229
Construction in progress	414		408
Total property, plant and equipment1	11,642		11,526
Allowance for depreciation and depletion	(2,630)		(2,340)
Property, plant and equipment, net	$	9,012	$	9,186
1 Includes right-of-use assets related to finance leases of $371 million and $411 million as of March 31, 2022 and December 31, 2021, respectively.

We recorded depreciation and depletion expense of $298 million and $215 million for the three months ended March 31, 2022 and 2021, respectively. Depreciation and depletion expense for the three months ended March 31, 2022 includes $68 million of accelerated depreciation related to the indefinite idle of the Indiana Harbor #4 blast furnace.