Financial Instruments and Fair Value Measurements - Foreign Currency Contracts Activity (Detail) - Forwards [Member] - Net Investment Hedges [Member] - Designated As Hedging Instrument [Member] |
9 Months Ended | |
|---|---|---|
|
Sep. 30, 2026
USD ($)
Derivative
|
Sep. 30, 2025
USD ($)
Derivative
|
|
| Derivative [Line Items] | ||
| Notional amounts at January 1 | $ 883,000,000 | $ 595,000,000 |
| New contracts | 876,000,000 | 749,000,000 |
| Matured, expired or settled contracts | (1,073,000,000) | (468,000,000) |
| Notional amounts at September 30 | 686,000,000 | 876,000,000 |
| CAD | ||
| Derivative [Line Items] | ||
| Notional amounts at January 1 | 200,000,000 | 163,000,000 |
| New contracts | 100,000,000 | 200,000,000 |
| Matured, expired or settled contracts | (300,000,000) | (163,000,000) |
| Notional amounts at September 30 | $ 0 | $ 200,000,000 |
| Weighted average forward rate at September 30 | 0 | 1.36 |
| Active contracts at September 30 | Derivative | 0 | 2 |
| GBP | ||
| Derivative [Line Items] | ||
| Notional amounts at January 1 | $ 683,000,000 | $ 432,000,000 |
| New contracts | 776,000,000 | 549,000,000 |
| Matured, expired or settled contracts | (773,000,000) | (305,000,000) |
| Notional amounts at September 30 | $ 686,000,000 | $ 676,000,000 |
| Weighted average forward rate at September 30 | 1.35 | 1.33 |
| Active contracts at September 30 | Derivative | 6 | 6 |