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Share-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of share-based compensation expenses
Total share-based compensation expenses were comprised as follows (in millions):
Three months ended September 30,Nine months ended September 30,
2020201920202019
Option awards$6.3 $7.0 $15.9 $15.1 
Other share-based awards 17.6 12.7 34.8 37.2 
Total share-based compensation before tax 23.9 19.7 50.7 52.3 
Tax benefit 5.7 4.7 12.1 12.5 
Total share-based compensation expense included in net income (loss)$18.2 $15.0 $38.6 $39.8