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Organization Restructuring Rollforward (Tables)
3 Months Ended
Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]  
Restructuring and Related Costs [Table Text Block] Activity in accrued restructuring, reported as part of Other current liabilities, is presented below.
Three months ended
December 31,
20212020
(in millions)
Beginning balance$3.1 $2.8 
Expenses incurred1.2 0.2 
Amounts paid(1.3)(1.1)
Ending balance$3.0 $1.9