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LONG-TERM DEBT - Narrative (Details) - USD ($)			12 Months Ended
	Jun. 29, 2020	Apr. 10, 2020	Dec. 31, 2020	Dec. 31, 2019	Jun. 08, 2018
Debt Instrument [Line Items]
Total unamortized debt issuance costs			$ 20,500,000	$ 21,300,000
Weighted average interest rate on variable rate debt			2.30%
Long-term debt			$ 4,239,400,000	4,429,300,000
Letters of credit outstanding			736,600,000	714,000,000.0
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			144,000,000.0
2018 Refinancing Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 1,200,000,000.0
Senior Notes
Debt Instrument [Line Items]
Debt issuance face value (as a percent)			100.00%
Senior Notes | 4.375% Senior Notes, due 2023
Debt Instrument [Line Items]
Long-term debt			$ 249,300,000	249,100,000
Stated interest rate (as a percent)			4.375%
Senior Notes | 4.15% Senior Notes due 2024
Debt Instrument [Line Items]
Long-term debt			$ 745,700,000	744,300,000
Stated interest rate (as a percent)			4.15%
Senior Notes | 3.20% Senior Notes due 2028
Debt Instrument [Line Items]
Long-term debt			$ 495,600,000	0
Stated interest rate (as a percent)	3.20%		3.20%
Debt issuance face value (as a percent)	99.892%
Debt instrument, face amount	$ 500,000,000.0
Debt issuance costs, gross	$ 1,500,000
Senior Notes | 3.45% Senior Notes due 2026
Debt Instrument [Line Items]
Long-term debt			$ 748,700,000	748,500,000
Stated interest rate (as a percent)			3.45%
Senior Notes | 4.70% Senior Notes Due 2028
Debt Instrument [Line Items]
Long-term debt			$ 1,241,800,000	$ 1,240,800,000
Stated interest rate (as a percent)			4.70%
Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 600,000,000
Debt instrument, term		364 days
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 144,000,000.0
Letters of credit outstanding			$ 0
Line of Credit | 2018 Refinancing Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 1,200,000,000.0
Letters of credit outstanding			$ 19,100,000
Line of Credit | 2018 Refinancing Credit Agreement | Swing Line Sub Facility
Debt Instrument [Line Items]
Maximum borrowing capacity					75,000,000.0
Line of Credit | 2018 Refinancing Credit Agreement | Letter of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 450,000,000.0
Line of Credit | Term Loan
Debt Instrument [Line Items]
Long-term debt		$ 456,000,000.0

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Face (par) amount of debt instrument at time of issuance.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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