OTHER COMPREHENSIVE INCOME (Amounts Reclassified from Accumulated Other Comprehensive Income to Earnings) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 196.1	$ 169.2	$ 149.3
Other nonoperating expense	(2.7)	5.1	10.7
Benefit from income taxes	299.4	193.0	200.1
Total	933.2	575.6	670.8
Reclassification From AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	6.7	4.5	15.2
Amortization Of Cash Flow Hedge Losses [Member] | Reclassification From AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense	2.1	2.0	2.0
Benefit from income taxes	(0.5)	(0.5)	(0.5)
Total	1.6	1.5	1.5
Amortization Of Pension And Postretirement Plan Actuarial Loss And Prior Service Cost [Member] | Reclassification From AOCI [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other nonoperating expense	6.9	4.0	18.5
Benefit from income taxes	(1.8)	(1.0)	(4.8)
Total	$ 5.1	$ 3.0	$ 13.7