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Earnings per Share (EPS) and Common Stock - Additional Information (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 17, 2026 | Jun. 30, 2026 | Mar. 31, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Oct. 01, 2026 | Sep. 30, 2025 | Oct. 01, 2024
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |
Anti-dilutive shares |  | 800,000 |  | 400,000 | 100,000 | 0 |  |  |
Common stock, shares authorized |  | 500,000,000 |  |  | 500,000,000 |  |  | 500,000,000 |
Stock repurchased during period (in shares) |  | 4,300,000 |  | 400,000 | 7,000,000 | 1,300,000 |  |  |
Stock repurchased during period, value |  | $ 525.0 |  | $ 75.0 | $ 975.0 | $ 225.0 |  |  |
Excise taxes related to share repurchases |  | 1.1 |  |  | 1.1 |  |  |  |
Accelerated Share Repurchase Agreement [Member] |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |
Stock authorized to repurchase | $ 375.0 |  |  |  |  |  |  |  |
Stock repurchased during period (in shares) | 1,900,000 |  |  |  |  |  |  |  |
Stock repurchased during period, value | $ 300.0 |  |  |  |  |  |  |  |
Share repurchase program holdback |  |  | $ 75.0 |  | 75.0 |  |  |  |
Additional shares issued |  | $ 0.8 |  |  | $ 0.8 |  |  |  |
Percentage of shares repurchased to total share authorized | 80.00% |  |  |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |
Common stock, shares authorized |  | 500,000,000 |  |  | 500,000,000 |  |  |  |
Stock authorized to repurchase |  |  |  |  |  |  |  |  | $ 2,000.0
Maximum [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |
Stock authorized to repurchase |  |  |  |  |  |  | $ 2,000.0 |  |
Weighted average price | Accelerated Share Repurchase Agreement [Member] |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |
Stock repurchased during period, value |  |  |  |  | $ 375.0 |  |  |  |

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