Share-Based Compensation Plans (Compensation Expense for Share-Based Arrangements and Tax Impacts) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2022 |
Jun. 30, 2021 |
Jun. 30, 2022 |
Jun. 30, 2021 |
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Total Share-Based Compensation Expense | $ 20.0 | $ 18.8 | $ 90.0 | $ 69.3 |
Tax Benefits Recognized | 5.0 | 4.7 | 22.6 | 17.4 |
Restricted Stock Unit Awards | ||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Total Share-Based Compensation Expense | 16.9 | 15.2 | 69.5 | 53.6 |
Performance Stock Units | ||||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
Total Share-Based Compensation Expense | $ 3.1 | $ 3.6 | $ 20.5 | $ 15.7 |