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Segment Information
3 Months Ended
Mar. 31, 2024
Segment Reporting [Abstract]  
Segment Information
4.    Segment Information
U. S. Steel has four reportable segments: North American Flat-Rolled (Flat-Rolled), Mini Mill, U. S. Steel Europe (USSE), and Tubular Products (Tubular). The results of our real estate businesses are disclosed in the Other category.
The chief operating decision maker evaluates performance and determines resource allocations based on a number of factors, the primary measure being earnings (loss) before interest and income taxes. Earnings (loss) before interest and income taxes for reportable segments and the Other category does not include net interest and other financial costs (income), income taxes, stock-based compensation expense, and certain other items that management believes are not indicative of future results.

The accounting principles applied at the operating segment level in determining earnings (loss) before interest and income taxes are generally the same as those applied at the consolidated financial statement level. Intersegment sales and transfers are accounted for at market-based prices and are eliminated at the corporate consolidation level. Corporate-level selling, general and administrative expenses and costs related to certain former businesses are allocated to the reportable segments and Other based on measures of activity that management believes are reasonable.
The results of segment operations for the three months ended March 31, 2024, and 2023 are:
(In millions) Three Months Ended March 31, 2024Customer
Sales
Intersegment
Sales
Net
Sales
Earnings (loss)
from
investees
Earnings (loss) before interest and income taxes
Flat-Rolled$2,391 $62 $2,453 $5 $34 
Mini Mill578 125 703  99 
USSE918 7 925  16 
Tubular271 4 275 9 57 
Total reportable segments4,158 198 4,356 14 206 
Other2  2  (2)
Reconciling Items and Eliminations (198)(198) (50)
Total$4,160 $ $4,160 $14 $154 
Three Months Ended March 31, 2023
Flat-Rolled$2,570 $90 $2,660 $(16)$(7)
Mini Mill553 70 623 — 12 
USSE838 844 — (34)
Tubular505 506 232 
Total reportable segments4,466 167 4,633 (13)203 
Other— — 
Reconciling Items and Eliminations— (167)(167)— (17)
Total$4,470 $— $4,470 $(13)$189 
A summary of total assets by segment is as follows:
(In millions)March 31, 2024December 31, 2023
Flat-Rolled$7,443 $7,546 
Mini Mill (a)
8,059 7,569 
USSE2,351 2,229 
Tubular1,001 1,002 
Total reportable segments$18,854 $18,346 
Other$132 $140 
Corporate, reconciling items, and eliminations (b)
1,462 1,965 
Total assets$20,448 $20,451 
(a) Includes assets of $3.4 billion and $3.0 billion at March 31, 2024, and December 31, 2023, respectively, related to a new technologically advanced flat rolled steelmaking facility, Big River 2 (BR2), currently under construction near Osceola, Arkansas.
(b) The majority of corporate, reconciling items, and eliminations is comprised of cash and the elimination of intersegment amounts.
The following is a schedule of reconciling items to consolidated earnings before interest and income taxes:
Three Months Ended March 31,
(In millions)20242023
Items not allocated to segments:
Restructuring and other charges (Note 20)$(6)$(1)
Stock-based compensation expense (Note 11)(11)(11)
Asset impairment charges(7)(4)
Environmental remediation charges(2)— 
Strategic alternatives review process costs(23)— 
Granite City idling costs(1)— 
Other charges, net (1)
Total reconciling items$(50)$(17)