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OTHER INCOME, NET
 12 Months Ended
Dec. 31, 2021
Other Income and Expenses [Abstract]  
OTHER INCOME, NET OTHER INCOME, NET
Total other income, net was as follows for the years ended December 31:
(in millions)202120202019
Non-service components of net periodic benefit costs$26.8 $16.7 $18.0 
AFUDC – Equity9.0 11.8 5.7 
Other, net2.4 2.9 15.9 
Other income, net$38.2 $31.4 $39.6