Quarterly report pursuant to Section 13 or 15(d)

DEBT AND CREDIT FACILITIES - Schedule Of Long-Term Debt (Details)

v3.21.2
DEBT AND CREDIT FACILITIES - Schedule Of Long-Term Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Total Principal Amount $ 5,514  
Long-term Debt   $ 5,424
Long-term Debt, Current Maturities   34
Total long-term debt 5,368 $ 5,390
ABL Facility    
Debt Instrument [Line Items]    
Long-term Line of Credit 1,670  
Maximum borrowing capacity 3,500  
Cleveland-Cliffs Inc.    
Debt Instrument [Line Items]    
Annual Effective Interest Rate   3.25%
Cleveland-Cliffs Inc. | EDC Revolving Facilities - outstanding balance    
Debt Instrument [Line Items]    
Long-term Line of Credit 56 $ 18
Maximum borrowing capacity 80 $ 40
Cleveland-Cliffs Inc. | ABL Facility    
Debt Instrument [Line Items]    
Annual Effective Interest Rate   2.15%
Maximum borrowing capacity $ 3,500 $ 3,500
Cleveland-Cliffs Inc. | 9.875% 2025 Senior Secured Notes    
Debt Instrument [Line Items]    
Stated interest rate 9.875% 9.875%
Annual Effective Interest Rate 10.57% 10.57%
Total Principal Amount $ 607 $ 955
Unamortized Debt Issuance Costs (4) (8)
Unamortized (Discounts) (15) (25)
Long-term Debt $ 588 $ 922
Cleveland-Cliffs Inc. | 6.75% 2026 Senior Secured Notes    
Debt Instrument [Line Items]    
Stated interest rate 6.75% 6.75%
Annual Effective Interest Rate 6.99% 6.99%
Total Principal Amount $ 845 $ 845
Unamortized Debt Issuance Costs (18) (20)
Unamortized (Discounts) (8) (9)
Long-term Debt $ 819 $ 816
Cleveland-Cliffs Inc. | 1.50% 2025 Convertible Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate 1.50% 1.50%
Annual Effective Interest Rate 6.26% 6.26%
Total Principal Amount $ 296 $ 296
Unamortized Debt Issuance Costs (3) (4)
Unamortized (Discounts) (45) (49)
Long-term Debt $ 248 $ 243
Cleveland-Cliffs Inc. | 7.00% 2027 Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate 7.00% 7.00%
Annual Effective Interest Rate 9.24% 9.24%
Total Principal Amount $ 73 $ 73
Unamortized Debt Issuance Costs 0 0
Unamortized (Discounts) (7) (8)
Long-term Debt $ 66 $ 65
Cleveland-Cliffs Inc. | 5.875% 2027 Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate 5.875% 5.875%
Annual Effective Interest Rate 6.49% 6.49%
Total Principal Amount $ 556 $ 556
Unamortized Debt Issuance Costs (4) (4)
Unamortized (Discounts) (17) (18)
Long-term Debt $ 535 $ 534
Cleveland-Cliffs Inc. | 4.625% 2029 Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate 4.625%  
Annual Effective Interest Rate 4.63%  
Total Principal Amount $ 500  
Unamortized Debt Issuance Costs (8)  
Unamortized (Discounts) 0  
Long-term Debt $ 492  
Cleveland-Cliffs Inc. | 4.875% 2031 Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate 4.875%  
Annual Effective Interest Rate 4.88%  
Total Principal Amount $ 500  
Unamortized Debt Issuance Costs (9)  
Unamortized (Discounts) 0  
Long-term Debt $ 491  
Cleveland-Cliffs Inc. | 6.25% 2040 Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate 6.25% 6.25%
Annual Effective Interest Rate 6.34% 6.34%
Total Principal Amount $ 263 $ 263
Unamortized Debt Issuance Costs (2) (2)
Unamortized (Discounts) (3) (3)
Long-term Debt $ 258 258
Cleveland-Cliffs Inc. | ABL Facility    
Debt Instrument [Line Items]    
Annual Effective Interest Rate 2.24%  
Long-term Line of Credit $ 1,670 $ 1,510
Cleveland-Cliffs Inc. | 4.875% 2024 Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate   4.875%
Annual Effective Interest Rate   5.00%
Total Principal Amount   $ 395
Unamortized Debt Issuance Costs   (3)
Unamortized (Discounts)   (1)
Long-term Debt   $ 391
Cleveland-Cliffs Inc. | 6.375% 2025 Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate   6.375%
Annual Effective Interest Rate   8.11%
Total Principal Amount   $ 64
Unamortized Debt Issuance Costs   0
Unamortized (Discounts)   (4)
Long-term Debt   $ 60
Cleveland-Cliffs Inc. | 5.75% 2025 Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate   5.75%
Annual Effective Interest Rate   6.01%
Total Principal Amount   $ 396
Unamortized Debt Issuance Costs   (3)
Unamortized (Discounts)   (4)
Long-term Debt   389
AK Steel | Industrial Revenue Bonds    
Debt Instrument [Line Items]    
Total Principal Amount   92
Unamortized Debt Issuance Costs   0
Unamortized Premiums   2
Long-term Debt   $ 94
AK Steel | 7.00% 2027 AK Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate 7.00% 7.00%
Annual Effective Interest Rate 9.24% 9.24%
Total Principal Amount $ 56 $ 56
Unamortized Debt Issuance Costs 0 0
Unamortized (Discounts) (5) (6)
Long-term Debt 51 $ 50
AK Steel | Industrial Revenue Bonds    
Debt Instrument [Line Items]    
Total Principal Amount 92  
Unamortized Debt Issuance Costs 0  
Unamortized Premiums 2  
Long-term Debt $ 94  
AK Steel | 7.625% 2021 AK Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate   7.625%
Annual Effective Interest Rate   7.33%
Total Principal Amount   $ 34
Unamortized Debt Issuance Costs   0
Unamortized (Discounts)   0
Long-term Debt   $ 34
AK Steel | 7.50% Senior Secured Notes due July 2023    
Debt Instrument [Line Items]    
Stated interest rate   7.50%
Annual Effective Interest Rate   6.17%
Total Principal Amount   $ 13
Unamortized Debt Issuance Costs   0
Unamortized (Discounts)   0
Long-term Debt   $ 13
AK Steel | 6.375% 2025 AK Senior Notes    
Debt Instrument [Line Items]    
Stated interest rate   6.375%
Annual Effective Interest Rate   8.11%
Total Principal Amount   $ 29
Unamortized Debt Issuance Costs   0
Unamortized (Discounts)   (2)
Long-term Debt   $ 27