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Changes in Capital Structure - Capped Call Options (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | ---
Jul. 30, 2025 | Jul. 08, 2025 | Jul. 31, 2025 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Option Indexed to Issuer's Equity [Line Items] |  |  |  |  |  |  |  |  |
Capped call options |  |  |  | $ 34 | [1] | $ 253 | [2] |  |
Other income, net |  |  |  | 4 |  | 3 |  | $ 16 | $ 33
Settlement of Capped Call Options (in shares) |  |  |  |  |  |  |  | 134 |
Subsequent Event |  |  |  |  |  |  |  |  |
Option Indexed to Issuer's Equity [Line Items] |  |  |  |  |  |  |  |  |
Capped call, convertible debt, conversion, premium |  | $ 257 |  |  |  |  |  |  |
Payment for capped calls including conversion premium |  | $ 292 |  |  |  |  |  |  |
Settlement of Capped Call Options (in shares) |  |  | 4,210,920 |  |  |  |  |  |
Retirement of treasury stock (in shares) | 224,585 |  |  |  |  |  |  |  |
Additional Paid-In Capital |  |  |  |  |  |  |  |  |
Option Indexed to Issuer's Equity [Line Items] |  |  |  |  |  |  |  |  |
Capped call options |  |  |  | $ 34 | [1] | $ 253 | [2] |  |
Convertible Senior Notes Capped Calls | Senior Notes |  |  |  |  |  |  |  |  |
Option Indexed to Issuer's Equity [Line Items] |  |  |  |  |  |  |  |  |
Capped calls, strike price (in usd per share) |  |  |  |  |  | $ 40.63 |  |  | $ 40.63
Capped call cap price (in usd per share) |  |  |  |  |  | $ 249.00 |  |  | $ 249.00
Other income, net |  |  |  |  |  | $ 4 |  |  |
Convertible Senior Notes Capped Calls | Senior Notes | Additional Paid-In Capital |  |  |  |  |  |  |  |  |
Option Indexed to Issuer's Equity [Line Items] |  |  |  |  |  |  |  |  |
Capped call options |  |  |  |  |  | 253 |  |  |
Convertible Senior Notes, due 2048 | Subsequent Event |  |  |  |  |  |  |  |  |
Option Indexed to Issuer's Equity [Line Items] |  |  |  |  |  |  |  |  |
Debt conversion, shares issued (in shares) |  | 3,986,335 |  |  |  |  |  |  |
Convertible Senior Notes, due 2048 | Senior Notes |  |  |  |  |  |  |  |  |
Option Indexed to Issuer's Equity [Line Items] |  |  |  |  |  |  |  |  |
Capped call, convertible debt, conversion, premium |  |  |  |  |  | 257 |  |  | $ 257
Borrowings outstanding |  |  |  |  |  | $ 232 |  |  | $ 232
[1] | For further discussion of the Capped Call Options, see Note 9, Changes in Capital Structure
[2] | For further discussion of the Capped Call Options, see Note 9, Changes in Capital Structure

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