CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)	3 Months Ended	6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Current assets:
Accounts Receivable, after Allowance for Credit Loss, Current	$ 2,088,900,000	$ 2,088,900,000	$ 1,913,300,000
Unbilled Contracts Receivable	157,500,000	157,500,000	185,400,000
Supplies inventories	441,800,000	441,800,000	474,600,000
Prepaid expenses and other	618,000,000.0	618,000,000.0	655,300,000
Total current assets	3,571,300,000	3,571,300,000	3,765,400,000
Property, plant and equipment, net	2,932,500,000	2,932,500,000	2,911,800,000
Goodwill, net	6,220,200,000	6,220,200,000	6,142,500,000
Intangible Assets, Net (Excluding Goodwill)	3,332,000,000	3,332,000,000	3,342,000,000
Joint venture partnerships and equity method investments	17,500,000	17,500,000	26,900,000
Other assets, net	638,800,000	638,800,000	536,500,000
Total assets	16,712,300,000	16,712,300,000	16,725,100,000
Liabilities, Current [Abstract]
Accounts Payable, Current	760,600,000	760,600,000	827,500,000
Accrued Liabilities, Current	707,500,000	707,500,000	804,000,000.0
Deferred Revenue, Current	388,300,000	388,300,000	421,700,000
Operating Lease, Liability, Current	182,100,000	182,100,000	165,800,000
Finance Lease, Liability, Current	6,700,000	6,700,000	6,400,000
Current debt excluding finance lease liability	2,019,500,000	2,019,500,000	999,800,000
Long-term debt, less current portion	4,064,700,000	4,064,700,000	3,225,200,000
Long-term Debt, Excluding Current Maturities	3,047,300,000	3,047,300,000	4,054,700,000
Commitments and contingent liabilities	483,900,000	483,900,000	409,300,000
Operating Lease, Liability, Noncurrent	642,600,000	642,600,000	648,900,000
Finance Lease, Liability, Noncurrent	76,900,000	76,900,000	78,600,000
Deferred income taxes and other tax liabilities	376,100,000	376,100,000	417,900,000
Noncontrolling interest	8,691,500,000	8,691,500,000	8,834,600,000
Shareholders' equity:
Common stock, 92.8 and 93.5 shares outstanding at March 31, 2013 and December 31, 2012, respectively	15,000,000.0	15,000,000.0	15,500,000
Additional paid-in capital	12,500,000	12,500,000	38,400,000
Retained earnings	7,700,000	7,700,000	7,700,000
Accumulated other comprehensive income	(8,177,600,000)	(8,177,600,000)	(7,888,200,000)
Total liabilities and shareholders' equity	(192,000,000.0)	(192,000,000.0)	(59,300,000)
Stockholders' Equity Attributable to Parent	8,005,800,000	8,005,800,000	7,875,000,000
Liabilities and Equity	16,712,300,000	16,712,300,000	16,725,100,000
Net earnings	205,600,000	433,900,000
Cash and cash equivalents	$ 265,100,000	$ 265,100,000	$ 536,800,000