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LONG-TERM DEBT AND LINES OF CREDIT (Tables)
 3 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]  
Schedule of Outstanding Debt
As of March 31, 2021 and December 31, 2020, long-term debt consisted of the following:
March 31, 2021December 31, 2020
(in thousands)
3.800% senior notes due April 1, 2021
$— $752,199 
3.750% senior notes due June 1, 2023
564,282 562,258 
4.000% senior notes due June 1, 2023
560,990 565,930 
2.650% senior notes due February 15, 2025
993,532 993,110 
1.200% senior notes due March 1, 2026
1,090,577 — 
4.800% senior notes due April 1, 2026
806,499 809,324 
4.450% senior notes due June 1, 2028
481,490 482,588 
3.200% senior notes due August 15, 2029
1,236,820 1,236,424 
2.900% senior notes due May 15, 2030
989,318 989,025 
4.150% senior notes due August 15, 2049
739,878 739,789 
Unsecured term loan facility1,986,780 1,985,776 
Unsecured revolving credit facility124,000 36,000 
Finance lease liabilities70,962 75,989 
Other borrowings46,454 65,352 
Total long-term debt9,691,582 9,293,764 
Less current portion64,530 827,357 
Long-term debt, excluding current portion$9,627,052 $8,466,407 
Schedule of Maturities of Long-Term Debt
At March 31, 2021, future maturities of long-term debt (excluding finance lease liabilities) were as follows by year (in thousands):
Year ending December 31,
2021$37,950 
202258,403 
20231,300,000 
20241,874,000 
20251,000,000 
2026 and thereafter5,300,000 
Total$9,570,353 
Schedule of Derivative Instruments
The table below presents information about our derivative financial instruments, designated as cash flow hedges, included in the consolidated balance sheets:
Fair Values
Derivative Financial InstrumentsBalance Sheet LocationWeighted-Average Fixed Rate of Interest at March 31, 2021Range of Maturity Dates at
March 31, 2021		March 31, 2021December 31, 2020
(in thousands)
Interest rate swaps (Notional of $300 million at December 31, 2020)
Accounts payable and accrued liabilities NANA$— $1,330 
Interest rate swaps (Notional of $1,250 million at March 31, 2021 and December 31, 2020)
Other noncurrent liabilities2.73%December 31, 2022$56,357 $65,490 

NA = not applicable.
Schedule of Derivative Instrument Effect on Other Comprehensive Income (Loss)
The table below presents the effects of our interest rate swaps on the consolidated statements of income and statements of comprehensive income for the three months ended March 31, 2021 and 2020:
Three Months Ended
March 31, 2021March 31, 2020
(in thousands)
Net unrealized gains (losses) recognized in other comprehensive income (loss)$994 $(47,896)
Net unrealized losses reclassified out of other comprehensive income (loss) to interest expense$10,838 $4,671