CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and Cash Equivalents	$ 1,518.7	$ 536.8
Accounts receivable, net	1,944.1	1,913.3
Unbilled services	152.9	185.4
Supplies inventory	493.2	474.6
Prepaid expenses and other	697.6	655.3
Total current assets	4,806.5	3,765.4
Property, plant and equipment, net	3,045.4	2,911.8
Goodwill, net	6,369.7	6,142.5
Intangible assets, net	3,488.9	3,342.0
Joint venture partnerships and equity method investments	16.3	26.9
Other assets, net	652.2	536.5
Total assets	18,379.0	16,725.1
Current liabilities:
Accounts payable	875.8	827.5
Accrued expenses and other	871.2	804.0
Unearned revenue	392.2	421.7
Short-term operating lease liabilities	184.6	165.8
Short-term finance lease liabilities	6.1	6.4
Short-term borrowings and current portion of long-term debt	1,000.3	999.8
Total current liabilities	3,330.2	3,225.2
Long-term debt, less current portion	5,331.2	4,054.7
Operating lease liabilities	676.3	648.9
Financing lease liabilities	74.3	78.6
Deferred income taxes and other tax liabilities	383.1	417.9
Other liabilities	517.4	409.3
Total liabilities	10,312.5	8,834.6
Commitments and contingent liabilities
Noncontrolling interest	14.3	15.5
Equity, Attributable to Parent [Abstract]
Common stock, 83.4 and 83.9 shares outstanding at December 31, 2024, and 2023, respectively	7.6	7.7
Additional paid-in capital	2.8	38.4
Retained earnings	8,303.4	7,888.2
Accumulated other comprehensive loss	(261.6)	(59.3)
Total shareholders’ equity	8,052.2	7,875.0
Total liabilities and shareholders’ equity	$ 18,379.0	$ 16,725.1