FAIR VALUE MEASUREMENTS (Recognized Assets and Liabilities at Fair Value) (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale debt securities	$ 12,000,000	$ 12,000,000
Contingent consideration	0
Recurring Basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	67,000,000	59,000,000
Cash surrender value of life insurance policies	50,000,000	43,000,000
Available-for-sale debt securities	12,000,000	12,000,000
Total assets	129,000,000	114,000,000
Deferred compensation liabilities	126,000,000	110,000,000
Contingent consideration		7,000,000
Total liabilities		145,000,000
Redeemable noncontrolling interest	82,000,000	76,000,000
Recurring Basis | Interest Rate Swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fix-to-variable interest rate swaps		28,000,000
Recurring Basis | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	67,000,000	59,000,000
Cash surrender value of life insurance policies	0	0
Available-for-sale debt securities	0	0
Total assets	67,000,000	59,000,000
Deferred compensation liabilities	0	0
Contingent consideration		0
Total liabilities		0
Redeemable noncontrolling interest	0	0
Recurring Basis | Level 1 | Interest Rate Swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fix-to-variable interest rate swaps		0
Recurring Basis | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Cash surrender value of life insurance policies	50,000,000	43,000,000
Available-for-sale debt securities	0	0
Total assets	50,000,000	43,000,000
Deferred compensation liabilities	126,000,000	110,000,000
Contingent consideration		0
Total liabilities		138,000,000
Recurring Basis | Level 2 | Interest Rate Swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fix-to-variable interest rate swaps		28,000,000
Recurring Basis | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Cash surrender value of life insurance policies	0	0
Available-for-sale debt securities	12,000,000	12,000,000
Total assets	12,000,000	12,000,000
Deferred compensation liabilities	0	0
Contingent consideration		7,000,000
Total liabilities		7,000,000
Redeemable noncontrolling interest	$ 82,000,000	76,000,000
Recurring Basis | Level 3 | Interest Rate Swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fix-to-variable interest rate swaps		$ 0