Share-Based Compensation Plans (Schedule of Total Compensation Expense for Share-Based Payment Arrangements) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Share-Based Compensation Expense	$ 52.8	$ 18.2	$ 127.1	$ 90.1
Tax Benefits Recognized	12.9	4.5	31.1	22.1
Restricted Stock Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Share-Based Compensation Expense	49.7	16.3	107.3	73.8
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Share-Based Compensation Expense	$ 3.1	$ 1.9	$ 19.8	$ 16.3