DEBT (Debt) (Details) - USD ($)		1 Months Ended	12 Months Ended
		May 31, 2020	Dec. 31, 2020	Sep. 30, 2020	Apr. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total short-term debt			$ 0			$ 0
Total long-term debt - face value			3,357,899,000			2,846,373,000
Unamortized discounts and debt issuance costs			(70,224,000)			(62,033,000)
Total long-term debt - book value			3,287,675,000			2,784,340,000
Less current maturities			515,435,000			25,000
Total long-term debt - reported value			2,772,240,000			2,784,315,000
Estimated fair value of long-term debt			$ 3,443,225,000			3,073,693,000
Term Loan Due [Member] | Term Loan Due April 2021 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Total short-term debt					$ 750,000,000
Line of Credit [Member] | Bank Line Of Credit Due 2021 [Member]
Debt Instrument [Line Items]
Maturity year			2025
Line of Credit [Member] | Bank Line Of Credit Due 2025 [Member]
Debt Instrument [Line Items]
Total short-term debt	[1]		$ 0			0
Line of Credit [Member] | Bank Line Of Credit Due 2025 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value	[1]		0			0
Notes [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 3,357,899,000
Notes [Member] | Bank Line Of Credit Due 2021 [Member]
Debt Instrument [Line Items]
Maturity year			2025
Notes [Member] | Floating-Rate Notes Due 2020 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 250,000,000	$ 0			250,000,000
Maturity year			2020
Notes [Member] | Floating-Rate Notes Due 2021 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 500,000,000			500,000,000
Maturity year			2021
Effective interest rate			1.11%
Notes [Member] | 8.85% notes due 2021 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 6,000,000			6,000,000
Interest rate			8.85%
Maturity year			2021
Effective interest rate			8.88%
Notes [Member] | 4.50% notes due 2025 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 400,000,000			400,000,000
Interest rate			4.50%
Maturity year			2025
Effective interest rate			4.65%
Notes [Member] | 3.90% notes due 2027 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 400,000,000			400,000,000
Interest rate			3.90%
Maturity year			2027
Effective interest rate			4.00%
Notes [Member] | 3.50% notes due 2030 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value		$ 750,000,000	$ 750,000,000			0
Interest rate		3.50%	3.50%
Maturity year		2030	2030
Effective interest rate			3.94%
Notes [Member] | 7.15% notes due 2037 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 129,239,000			129,239,000
Interest rate			7.15%
Maturity year			2037
Effective interest rate			8.05%
Notes [Member] | 4.50% notes due 2047 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 700,000,000			700,000,000
Interest rate			4.50%
Maturity year			2047
Effective interest rate			4.59%
Notes [Member] | 4.70% notes due 2048 [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 460,949,000			460,949,000
Interest rate			4.70%
Maturity year			2048
Effective interest rate			5.42%
Other Notes [Member]
Debt Instrument [Line Items]
Total long-term debt - face value			$ 11,711,000			$ 185,000
Effective interest rate			0.77%
Line of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 1,000,000,000	$ 1,000,000,000

[1] Borrowings on the bank line of credit are classified as short-term if we intend to repay within twelve months and as long-term if we have the intent and ability to extend payment beyond twelve months.