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Debt - Additional Information (Detail) |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 12, 2024 USD ($) | May 10, 2024 USD ($) eligibleGreenProject | Apr. 01, 2024 USD ($) | Dec. 31, 2024 USD ($) asset | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Feb. 28, 2023 USD ($) | Jan. 04, 2023 USD ($) extension_option
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Repayments of senior debt |  |  |  | $ 400,000,000 | $ 0 | $ 0 |  |
Aggregate borrowing capacity |  |  |  |  |  |  |  | $ 1,500,000,000
Credit facility |  |  |  | 992,000,000 | 989,000,000 |  |  |
Cash and cash equivalents |  |  |  | 554,000,000 | 1,144,000,000 | $ 667,000,000 |  |
Foreign Currency Borrowings |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Aggregate borrowing capacity |  |  |  |  |  |  |  | 500,000,000
Swingline Loans |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Aggregate borrowing capacity |  |  |  |  |  |  |  | 100,000,000
Revolving Credit Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Aggregate borrowing capacity |  |  |  | $ 1,500,000,000 |  |  |  |
Adjustment to base interest rate |  |  |  | 0.10% |  |  |  |
Variable interest rate |  |  |  | 0.85% |  |  |  |
Facility commitment fee |  |  |  | 0.19% |  |  |  |
Basis point reduction for achievement of sustainability milestone |  |  |  | 0.0004 |  |  |  |
Debt interest rate |  |  |  | 5.25% |  |  |  |
Line of credit facility remaining borrowing capacity |  |  |  | $ 1,500,000,000 |  |  |  |
Term Loan |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Aggregate borrowing capacity |  |  |  |  |  |  |  | 1,000,000,000
Credit facility |  |  |  | $ 998,000,000 | 997,000,000 |  |  |
Adjustment to base interest rate |  |  |  | 0.10% |  |  |  |
Variable interest rate |  |  |  | 0.95% |  |  |  |
Basis point reduction for achievement of sustainability milestone |  |  |  | 0.0005 |  |  |  |
Debt interest rate |  |  |  | 5.34% |  |  |  |
Credit facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Additional borrowing capacity |  |  |  |  |  |  |  | 500,000,000
Adjustment to base interest rate |  |  |  | 0.10% |  |  |  |
Credit facility | Letter of Credit |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Aggregate borrowing capacity |  |  |  |  |  |  |  | 100,000,000
Credit facility term loan due January 2027 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Credit facility |  |  |  |  |  |  |  | 500,000,000
Credit facility term loan due January 2028 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Credit facility |  |  |  |  |  |  |  | $ 500,000,000
Upper Limit | Revolving Credit Facility | Scenario Adjustment | Sustainability Pricing |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument increase in interest rate |  |  |  | 0.04% |  |  |  |
Debt instrument facility fee increase decrease |  |  |  | 0.0001 |  |  |  |
Upper Limit | Revolving Credit Facility | Investment grade |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Variable interest rate |  |  |  | 1.40% |  |  |  |
Facility commitment fee |  |  |  | 0.30% |  |  |  |
Upper Limit | Term Loan |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Variable interest rate |  |  |  | 1.60% |  |  |  |
Upper Limit | Term Loan | Scenario Adjustment | Sustainability Pricing |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt instrument increase in interest rate |  |  |  | 0.05% |  |  |  |
Lower Limit | Revolving Credit Facility | Investment grade |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Variable interest rate |  |  |  | 0.725% |  |  |  |
Facility commitment fee |  |  |  | 0.125% |  |  |  |
Lower Limit | Term Loan | Investment grade |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Variable interest rate |  |  |  | 0.80% |  |  |  |
3.875% Series G Senior Notes, Due April 2024 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Repayments of senior debt |  |  | $ 400,000,000 |  |  |  |  |
Debt interest rate |  |  |  | 3.875% |  |  |  |
Series K senior notes, with a rate of 5.7% due July 2034 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Face amount of debt |  | $ 600,000,000 |  |  |  |  |  |
Debt interest rate |  | 5.70% |  | 5.70% |  |  |  |
Proceeds from issuance of senior long-term debt |  | $ 584,000,000 |  |  |  |  |  |
Number of eligible green projects to finance and/or refinance (or more) | eligibleGreenProject |  | 1 |  |  |  |  |  |
Number of days before maturity date before eligible for redemption |  | 90 days |  |  |  |  |  |
Redemption price, percent |  | 100.00% |  |  |  |  |  |
Series K senior notes, with a rate of 5.7% due July 2034 | Revolving Credit Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Net repayments under credit facility |  | $ 215,000,000 |  |  |  |  |  |
5.500% Series L Senior Notes, Due April 2035 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Face amount of debt | $ 700,000,000 |  |  |  |  |  |  |
Debt interest rate | 5.50% |  |  | 5.50% |  |  |  |
Proceeds from issuance of senior long-term debt | $ 683,000,000 |  |  |  |  |  |  |
Net repayments under credit facility | $ 525,000,000 |  |  |  |  |  |  |
Number of days before maturity date before eligible for redemption | 90 days |  |  |  |  |  |  |
Redemption price, percent | 100.00% |  |  |  |  |  |  |
Covenant Requirement | Upper Limit | Credit facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Leverage ratio |  |  |  | 7.25 |  |  |  |
Covenant Requirement | Lower Limit | Credit facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Unsecured interest coverage ratio |  |  |  | 175.00% |  |  |  |
Fixed charge coverage ratio |  |  |  | 125.00% |  |  |  |
Cash and cash equivalents |  |  |  | $ 100,000,000 |  |  |  |
Debt Covenant | Less Restrictive Covenant |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Leverage ratio |  |  |  | 6.0 |  |  |  |
Senior Notes |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Face amount of debt |  |  |  | $ 4,100,000,000 | 3,200,000,000 |  |  |
Unamortized discount |  |  |  | $ 57,000,000 | 30,000,000 |  |  |
Debt covenant compliance |  |  |  | As of December 31, 2024, we are in compliance with all of these covenants. |  |  |  |
Senior Notes | Upper Limit |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt repurchase authorized amount |  |  |  |  |  |  | $ 1,000,000,000 |
Credit facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt covenant compliance |  |  |  | As of December 31, 2024, we are in compliance with all of these covenants. |  |  |  |
Credit facility | Revolving Credit Facility |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Term of extension option one |  |  |  |  |  |  |  | 1 year
Number of extension options, option two | extension_option |  |  |  |  |  |  |  | 2
Term of extension options, option two |  |  |  |  |  |  |  | 6 months
Credit facility | Credit facility term loan due January 2027 |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Number of extension options | extension_option |  |  |  |  |  |  |  | 1
Term of extension option |  |  |  |  |  |  |  | 1 year
Secured Debt |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Number of mortgage debt secured by asset | asset |  |  |  | 1 |  |  |  |
Debt, average interest rate |  |  |  | 4.67% |  |  |  |
Mortgage debt repayments |  |  |  | $ 2,000,000 | $ 2,000,000 |  |  |

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