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Long-Term Debt - Long-Term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2020
Debt Instrument [Line Items]
Less: Current portion of long-term debt	$ (2,347)	$ (2,326)
Long-term debt, net of current portion	$ 6,562,803	6,826,566
Notes payable
Debt Instrument [Line Items]
Debt Instrument, stated interest rate	3.50%
Notes payable			$ 26,000
3.8% Senior Notes due 2024
Debt Instrument [Line Items]
Debt Instrument, stated interest rate	3.80%
4.375% Senior Notes Due 2028
Debt Instrument [Line Items]
Debt Instrument, stated interest rate	4.375%
4.9% Senior Notes due 2044
Debt Instrument [Line Items]
Debt Instrument, stated interest rate	4.90%
Senior Notes due 2031
Debt Instrument [Line Items]
Debt Instrument, stated interest rate	5.75%
Carrying Amount
Debt Instrument [Line Items]
Credit facility	$ 235,000	500,000
Notes payable	21,783	22,356
Total debt	6,565,150	6,828,892
Carrying Amount \| 4 1/2% Senior Notes Due 2023
Debt Instrument [Line Items]
Senior notes	648,370	648,078
Carrying Amount \| 3.8% Senior Notes due 2024
Debt Instrument [Line Items]
Senior notes	908,352	908,061
Carrying Amount \| 4.375% Senior Notes Due 2028
Debt Instrument [Line Items]
Senior notes	992,174	991,880
Carrying Amount \| 4.9% Senior Notes due 2044
Debt Instrument [Line Items]
Senior notes	692,105	692,056
Carrying Amount \| Senior Notes due 2031
Debt Instrument [Line Items]
Senior notes	1,482,691	1,482,319
Carrying Amount \| Two Point Two Six Eight Percent Senior Notes due 2026
Debt Instrument [Line Items]
Senior notes	792,977	792,621
Carrying Amount \| Two Point Eight Seven Five Percent Senior Notes due 2032
Debt Instrument [Line Items]
Senior notes	791,698	791,521
Estimated Fair Value
Debt Instrument [Line Items]
Credit facility	235,000	500,000
Notes payable	20,800	22,000
Total debt	6,636,900	7,351,100
Estimated Fair Value \| 4 1/2% Senior Notes Due 2023
Debt Instrument [Line Items]
Senior notes	657,500	670,200
Estimated Fair Value \| 3.8% Senior Notes due 2024
Debt Instrument [Line Items]
Senior notes	916,300	950,000
Estimated Fair Value \| 4.375% Senior Notes Due 2028
Debt Instrument [Line Items]
Senior notes	1,014,100	1,082,100
Estimated Fair Value \| 4.9% Senior Notes due 2044
Debt Instrument [Line Items]
Senior notes	692,200	781,500
Estimated Fair Value \| Senior Notes due 2031
Debt Instrument [Line Items]
Senior notes	1,638,300	1,769,600
Estimated Fair Value \| Two Point Two Six Eight Percent Senior Notes due 2026
Debt Instrument [Line Items]
Senior notes	749,400	795,200
Estimated Fair Value \| Two Point Eight Seven Five Percent Senior Notes due 2032
Debt Instrument [Line Items]
Senior notes	$ 713,300	$ 780,500