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ACQUISITIONS (Tables)
 3 Months Ended
Dec. 31, 2021
Business Combination and Asset Acquisition [Abstract]  
Acquisition-Related Expenses The following table details our acquisition-related expenses.
Three months ended December 31,
$ in millions20212020
Acquisition-related expenses:
Legal fees$2 $1 
Identifiable intangible asset amortization4 — 
Other professional fees— 1 
Total Acquisition-related expenses$6 $2