Notes Payable - General (Details)	3 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2024 GBP (£)	Mar. 31, 2024 EUR (€)	Dec. 31, 2023 USD ($)
5.050% Notes due 2026 | Interest rate swaps
Debt
Length of swap contracts	3 years
Notes and bonds payable
Debt
Total principal amount	$ 22,002,130,000			$ 18,562,064,000
Unamortized net premiums, deferred financing costs and basis adjustment on interest rate swaps designated as fair value hedge	(254,126,000)			40,255,000
Net payable amount	$ 21,748,004,000			18,602,319,000
Notes and bonds payable | $4.600% Notes due 2024
Debt
Interest rate (as a percent)	4.60%	4.60%	4.60%
Principal (Currency Denomination)	$ 499,999,000
Total principal amount	$ 0			499,999,000
Notes and bonds payable | 3.875% Notes due 2024
Debt
Interest rate (as a percent)	3.875%	3.875%	3.875%
Principal (Currency Denomination)	$ 350,000,000
Total principal amount	$ 350,000,000			350,000,000
Notes and bonds payable | 3.875% Notes due 2025
Debt
Interest rate (as a percent)	3.875%	3.875%	3.875%
Principal (Currency Denomination)	$ 500,000,000
Total principal amount	$ 500,000,000			500,000,000
Notes and bonds payable | 4.625% Notes due 2025
Debt
Interest rate (as a percent)	4.625%	4.625%	4.625%
Principal (Currency Denomination)	$ 549,997,000
Total principal amount	$ 549,997,000			549,997,000
Notes and bonds payable | 5.050% Notes due 2026
Debt
Interest rate (as a percent)	5.05%	5.05%	5.05%
Principal (Currency Denomination)	$ 500,000,000
Total principal amount	$ 500,000,000			500,000,000
Notes and bonds payable | 0.750% Notes due 2026
Debt
Interest rate (as a percent)	0.75%	0.75%	0.75%
Principal (Currency Denomination)	$ 325,000,000
Total principal amount	$ 325,000,000			325,000,000
Notes and bonds payable | 4.875% Notes due 2026
Debt
Interest rate (as a percent)	4.875%	4.875%	4.875%
Principal (Currency Denomination)	$ 599,997,000
Total principal amount	$ 599,997,000			599,997,000
Notes and bonds payable | 4.450% Notes due 2026
Debt
Interest rate (as a percent)	4.45%	4.45%	4.45%
Principal (Currency Denomination)	$ 299,968,000
Total principal amount	$ 299,968,000			0
Notes and bonds payable | 4.125% Notes due 2026
Debt
Interest rate (as a percent)	4.125%	4.125%	4.125%
Principal (Currency Denomination)	$ 650,000,000
Total principal amount	$ 650,000,000			650,000,000
Notes and bonds payable | 1.875% Notes due 2027
Debt
Interest rate (as a percent)	1.875%	1.875%	1.875%
Principal (Currency Denomination) | £		£ 250,000,000
Total principal amount	$ 316,025,000			318,450,000
Notes and bonds payable | 3.000% Notes due 2027
Debt
Interest rate (as a percent)	3.00%	3.00%	3.00%
Principal (Currency Denomination)	$ 600,000,000
Total principal amount	$ 600,000,000			600,000,000
Notes and bonds payable | 3.200% Notes due 2027
Debt
Interest rate (as a percent)	3.20%	3.20%	3.20%
Principal (Currency Denomination)	$ 299,984,000
Total principal amount	$ 299,984,000			0
Notes and bonds payable | 1.125% Notes due 2027
Debt
Interest rate (as a percent)	1.125%	1.125%	1.125%
Principal (Currency Denomination) | £		£ 400,000,000
Total principal amount	$ 505,640,000			509,520,000
Notes and bonds payable | 3.950% Notes due 2027
Debt
Interest rate (as a percent)	3.95%	3.95%	3.95%
Principal (Currency Denomination)	$ 599,873,000
Total principal amount	$ 599,873,000			599,873,000
Notes and bonds payable | 3.650% Notes due 2028
Debt
Interest rate (as a percent)	3.65%	3.65%	3.65%
Principal (Currency Denomination)	$ 550,000,000
Total principal amount	$ 550,000,000			550,000,000
Notes and bonds payable | 3.400% Notes due 2028
Debt
Interest rate (as a percent)	3.40%	3.40%	3.40%
Principal (Currency Denomination)	$ 599,816,000
Total principal amount	$ 599,816,000			599,816,000
Notes and bonds payable | 2.100% Notes due 2028
Debt
Interest rate (as a percent)	2.10%	2.10%	2.10%
Principal (Currency Denomination)	$ 449,994,000
Total principal amount	$ 449,994,000			0
Notes and bonds payable | 2.200% Notes due 2028
Debt
Interest rate (as a percent)	2.20%	2.20%	2.20%
Principal (Currency Denomination)	$ 499,959,000
Total principal amount	$ 499,959,000			499,959,000
Notes and bonds payable | 4.700% Notes due 2028
Debt
Interest rate (as a percent)	4.70%	4.70%	4.70%
Principal (Currency Denomination)	$ 400,000,000
Total principal amount	$ 400,000,000			400,000,000
Notes and bonds payable | 4.750% Notes due 2029
Debt
Interest rate (as a percent)	4.75%	4.75%	4.75%
Principal (Currency Denomination)	$ 450,000,000
Total principal amount	$ 450,000,000			0
Notes and bonds payable | 3.250% Notes due 2029
Debt
Interest rate (as a percent)	3.25%	3.25%	3.25%
Principal (Currency Denomination)	$ 500,000,000
Total principal amount	$ 500,000,000			500,000,000
Notes and bonds payable | 4.000% Notes due 2029
Debt
Interest rate (as a percent)	4.00%	4.00%	4.00%
Principal (Currency Denomination)	$ 399,999,000
Total principal amount	$ 399,999,000			0
Notes and bonds payable | 3.100% Notes due 2029
Debt
Interest rate (as a percent)	3.10%	3.10%	3.10%
Principal (Currency Denomination)	$ 599,291,000
Total principal amount	$ 599,291,000			599,291,000
Notes and bonds payable | 3.400% Notes due 2030
Debt
Interest rate (as a percent)	3.40%	3.40%	3.40%
Principal (Currency Denomination)	$ 500,000,000
Total principal amount	$ 500,000,000			0
Notes and bonds payable | 4.850% Notes due 2030
Debt
Interest rate (as a percent)	4.85%	4.85%	4.85%
Principal (Currency Denomination)	$ 600,000,000
Total principal amount	$ 600,000,000			600,000,000
Notes and bonds payable | 3.160% Notes due 2030
Debt
Interest rate (as a percent)	3.16%	3.16%	3.16%
Principal (Currency Denomination) | £		£ 140,000,000
Total principal amount	$ 176,974,000			178,332,000
Notes and bonds payable | 4.875% Notes due 2030
Debt
Interest rate (as a percent)	4.875%	4.875%	4.875%
Principal (Currency Denomination) | €			€ 550,000,000
Total principal amount	$ 594,055,000			607,915,000
Notes and bonds payable | 1.625% Notes due 2030
Debt
Interest rate (as a percent)	1.625%	1.625%	1.625%
Principal (Currency Denomination) | £		£ 400,000,000
Total principal amount	$ 505,640,000			509,520,000
Notes and bonds payable | 3.250% Notes due 2031
Debt
Interest rate (as a percent)	3.25%	3.25%	3.25%
Principal (Currency Denomination)	$ 950,000,000
Total principal amount	$ 950,000,000			950,000,000
Notes and bonds payable | 3.200% Notes due 2031
Debt
Interest rate (as a percent)	3.20%	3.20%	3.20%
Principal (Currency Denomination)	$ 449,995,000
Total principal amount	$ 449,995,000			0
Notes and bonds payable | 5.750% Notes due 2031
Debt
Interest rate (as a percent)	5.75%	5.75%	5.75%
Principal (Currency Denomination) | £		£ 300,000,000
Total principal amount	$ 379,230,000			382,140,000
Notes and bonds payable | 2.700% Notes due 2032
Debt
Interest rate (as a percent)	2.70%	2.70%	2.70%
Principal (Currency Denomination)	$ 350,000,000
Total principal amount	$ 350,000,000			0
Notes and bonds payable | 3.180% Notes due 2032
Debt
Interest rate (as a percent)	3.18%	3.18%	3.18%
Principal (Currency Denomination) | £		£ 345,000,000
Total principal amount	$ 436,115,000			439,461,000
Notes and bonds payable | 5.625% Notes due 2032
Debt
Interest rate (as a percent)	5.625%	5.625%	5.625%
Principal (Currency Denomination)	$ 750,000,000
Total principal amount	$ 750,000,000			750,000,000
Notes and bonds payable | 2.850% Notes due 2032
Debt
Interest rate (as a percent)	2.85%	2.85%	2.85%
Principal (Currency Denomination)	$ 699,655,000
Total principal amount	$ 699,655,000			699,655,000
Notes and bonds payable | 1.800% Notes due 2033
Debt
Interest rate (as a percent)	1.80%	1.80%	1.80%
Principal (Currency Denomination)	$ 400,000,000
Total principal amount	$ 400,000,000			400,000,000
Notes and bonds payable | 1.750% Notes due 2033
Debt
Interest rate (as a percent)	1.75%	1.75%	1.75%
Principal (Currency Denomination) | £		£ 350,000,000
Total principal amount	$ 442,435,000			445,830,000
Notes and bonds payable | 4.900% Notes due 2033
Debt
Interest rate (as a percent)	4.90%	4.90%	4.90%
Principal (Currency Denomination)	$ 600,000,000
Total principal amount	$ 600,000,000			600,000,000
Notes and bonds payable | 5.125% Notes due 2034
Debt
Interest rate (as a percent)	5.125%	5.125%	5.125%
Principal (Currency Denomination)	$ 800,000,000
Total principal amount	$ 800,000,000			0
Notes and bonds payable | 2.730% Notes due 2034
Debt
Interest rate (as a percent)	2.73%	2.73%	2.73%
Principal (Currency Denomination) | £		£ 315,000,000
Total principal amount	$ 398,192,000			401,247,000
Notes and bonds payable | 5.125% Notes due 2034
Debt
Interest rate (as a percent)	5.125%	5.125%	5.125%
Principal (Currency Denomination) | €			€ 550,000,000
Total principal amount	$ 594,055,000			607,915,000
Notes and bonds payable | 5.875% Bonds due 2035
Debt
Interest rate (as a percent)	5.875%	5.875%	5.875%
Principal (Currency Denomination)	$ 250,000,000
Total principal amount	$ 250,000,000			250,000,000
Notes and bonds payable | 3.390% Notes due 2037
Debt
Interest rate (as a percent)	3.39%	3.39%	3.39%
Principal (Currency Denomination) | £		£ 115,000,000
Total principal amount	$ 145,372,000			146,487,000
Notes and bonds payable | 6.000% Notes due 2039
Debt
Interest rate (as a percent)	6.00%	6.00%	6.00%
Principal (Currency Denomination) | £		£ 450,000,000
Total principal amount	$ 568,845,000			573,210,000
Notes and bonds payable | 2.500% Notes due 2042
Debt
Interest rate (as a percent)	2.50%	2.50%	2.50%
Principal (Currency Denomination) | £		£ 250,000,000
Total principal amount	$ 316,025,000			318,450,000
Notes and bonds payable | 4.650% Notes due 2047
Debt
Interest rate (as a percent)	4.65%	4.65%	4.65%
Principal (Currency Denomination)	$ 550,000,000
Total principal amount	$ 550,000,000			$ 550,000,000