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Cash and Cash Equivalents (Tables) | 12 Months Ended
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Dec. 31, 2022
Cash and Cash Equivalents |
Schedule of cash and cash equivalents | ​
​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31 |  | December 31 |
($ millions) |  | 2022 |  | 2021 | ​
Cash |  | 1 782 |  | 1 971 | ​
Cash equivalents |  | 198 |  | 234 | ​
​ |  | 1 980 |  | 2 205 | ​

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- Definition Tabular disclosure of cash and cash equivalents. + References No definition available. + Details
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