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COMMITMENTS AND CONTINGENCIES (Tables)
 12 Months Ended
Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Contractual commitments under non-cancelable purchase contracts
The following table summarizes our contractual commitments under purchase contracts as of December 31, 2021:
Purchase Commitments
($ in millions)
2022$1,244.0 
2023961.7 
2024961.8 
2025823.8 
2026290.3 
Thereafter3,057.9 
Total commitments$7,339.5