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LONG-TERM DEBT AND LINES OF CREDIT (Tables)
 6 Months Ended
Jun. 30, 2021
Debt Disclosure [Abstract]  
Schedule of Outstanding Debt
As of June 30, 2021 and December 31, 2020, long-term debt consisted of the following:
June 30, 2021December 31, 2020
(in thousands)
3.800% senior notes due April 1, 2021
$— $752,199 
3.750% senior notes due June 1, 2023
559,722 562,258 
4.000% senior notes due June 1, 2023
562,634 565,930 
2.650% senior notes due February 15, 2025
993,954 993,110 
1.200% senior notes due March 1, 2026
1,091,057 — 
4.800% senior notes due April 1, 2026
803,674 809,324 
4.450% senior notes due June 1, 2028
480,391 482,588 
3.200% senior notes due August 15, 2029
1,237,215 1,236,424 
2.900% senior notes due May 15, 2030
989,611 989,025 
4.150% senior notes due August 15, 2049
739,967 739,789 
Unsecured term loan facility1,987,785 1,985,776 
Unsecured revolving credit facility717,000 36,000 
Finance lease liabilities72,539 75,989 
Other borrowings34,041 65,352 
Total long-term debt10,269,590 9,293,764 
Less current portion52,611 827,357 
Long-term debt, excluding current portion$10,216,979 $8,466,407 
Schedule of Maturities of Long-Term Debt
At June 30, 2021, future maturities of long-term debt (excluding finance lease liabilities) are as follows by year (in thousands):
Year Ending December 31,
2021$25,638 
202258,403 
20231,300,000 
20242,467,000 
20251,000,000 
20261,850,000 
2027 and thereafter3,450,000 
Total$10,151,041 
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 June 30, 2021Range of Maturity Dates at
June 30, 2021		June 30, 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 June 30, 2021 and December 31, 2020)
Other noncurrent liabilities2.73%December 31, 2022$48,474 $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 and six months ended June 30, 2021 and 2020:
Three Months EndedSix Months Ended
June 30, 2021June 30, 2020June 30, 2021June 30, 2020
(in thousands)
Net unrealized gains (losses) recognized in other comprehensive income (loss)$(410)$(5,630)$584 $(53,526)
Net unrealized losses reclassified out of other comprehensive income (loss) to interest expense$9,662 $9,982 $20,500 $14,653