COMMITMENTS AND CONTINGENCIES (NARRATIVE) (Details) - USD ($)				1 Months Ended	3 Months Ended
	Mar. 31, 2022	Nov. 23, 2021	Mar. 25, 2021	Apr. 30, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Initiation date of current line of credit agreement		Nov. 23, 2021
Line of Credit Facility, Increase (Decrease), Other, Net			$ 300,000,000
Line of Credit Facility, Current Borrowing Capacity		$ 1,500,000,000	$ 1,200,000,000
Initial Borrowing Capacity	$ 1,500,000				$ 1,500,000
Proceeds from factored receivables	100,000,000				100,000,000
Percentage of receivables factored	25				$ 25
Credit facility interest rate					1.30%
Line of Credit Facility, Collateral					Letter of credit fees are one eighth of 1% of the stated amount of the letter of credit on the date of issuance, renewal or amendment, plus an annual fee equal to the borrowing margin for Eurodollar loans.
Receivables Held-for-sale, Amount	100,000,000				$ 100,000,000
Line of credit	803,000,000				803,000,000		$ 791,000,000
Average daily utilization under credit facility					917,800,000	$ 446,100,000
Remaining borrowing capacity under credit facility	525,000,000				525,000,000
Letters Of Credit Issued Outside Line Of Credit Facility	400,000				400,000
Line Of Credit Facility Letters Of Credit Issued	$ 12,600,000				12,600,000
Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Credit facility interest rate	0.50%
London Interbank Offered Rate (LIBOR) [Member]
Credit facility interest rate	1.25%
Avtex
Line of Credit Facility, Increase (Decrease), Other, Net				$ 500,000,000
Minimum | Company's net leverage ratio [Member]
Credit facility interest rate	0.00%
Minimum | Eurodollar [Member]
Credit facility interest rate	1.00%
Maximum
Proceeds from factored receivables	$ 100,000,000				100,000,000
Receivables Held-for-sale, Amount	$ 100,000,000				$ 100,000,000
Maximum | Company's net leverage ratio [Member]
Credit facility interest rate	0.75%
Maximum | Eurodollar [Member]
Credit facility interest rate	1.75%