Common Stock	9 Months Ended
Sep. 30, 2025
Equity [Abstract]
Common Stock	NOTE R. COMMON STOCK On February 20, 2025, the Board of Directors authorized the Company to repurchase an additional $1,000 million of its common stock pursuant to the Company's stock repurchase program (the "Repurchase Program"), bringing the total amount authorized pursuant to the Repurchase Program to $5,000 million. During the three and nine months ended September 30, 2025, the Company repurchased approximately $27 million and $283 million, respectively, of its common stock under the Repurchase Program, leaving $1,236 million of authorized repurchases remaining under the Repurchase Program as of September 30, 2025. The Repurchase Program has no termination date, and the timing and amount of stock purchases are subject to market conditions and corporate needs. The Repurchase Program may be modified, suspended or discontinued at any time at the Company’s discretion.

Common Stock

9 Months Ended

Sep. 30, 2025

NOTE R. COMMON STOCK

On February 20, 2025, the Board of Directors authorized the Company to repurchase an additional $1,000 million of its common stock pursuant to the Company's stock repurchase program (the "Repurchase Program"), bringing the total amount authorized pursuant to the Repurchase Program to $5,000 million.

During the three and nine months ended September 30, 2025, the Company repurchased approximately $27 million and $283 million, respectively, of its common stock under the Repurchase Program, leaving $1,236 million of authorized repurchases remaining under the Repurchase Program as of September 30, 2025. The Repurchase Program has no termination date, and the timing and amount of stock purchases are subject to market conditions and corporate needs. The Repurchase Program may be modified, suspended or discontinued at any time at the Company’s discretion.

Allison Transmission Holdings Inc 10-Q