Financial Instruments and Fair Value Measurements - Carrying Amounts and Estimated Fair Values of Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value of Debt	$ 29,904,620	$ 29,000,501
Fair Value of Debt	27,121,288	26,781,807
Credit Facilities and Commercial Paper [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value of Debt	489,395	979,313
Fair Value of Debt	489,395	979,313
Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value of Debt	27,345,366	25,311,647
Fair Value of Debt	24,597,352	23,121,936
Term Loans and Unsecured Other [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value of Debt	1,784,285	2,330,520
Fair Value of Debt	1,768,822	2,322,827
Secured Mortgage [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value of Debt	285,574	379,021
Fair Value of Debt	$ 265,719	$ 357,731