Overview	6 Months Ended
Jun. 30, 2020
Accounting Policies [Abstract]
Overview	NOTE A. OVERVIEW Overview Allison Transmission Holdings, Inc. and its subsidiaries (“Allison,” or the “Company”) design and manufacture vehicle propulsion solutions, including commercial duty on-highway, off-highway and defense fully automatic transmissions and electric hybrid and fully electric systems. The business was founded in 1915 and has been headquartered in Indianapolis, Indiana since inception. Allison was an operating unit of General Motors Corporation from 1929 until 2007, when Allison once again became a stand-alone company. In March 2012, Allison began trading on the New York Stock Exchange under the symbol, “ALSN”. Although approximately 77% of revenues were generated in North America in 2019, the Company has a global presence by serving customers in Europe, Asia, South America and Africa. The Company serves customers through an independent network of approximately 1,500 independent distributor and dealer locations worldwide. In March 2020, the World Health Organization categorized the novel coronavirus ("COVID-19") as a pandemic, and it continues to impact the United States and other major markets in which the Company operates across the world, resulting in severe disruptions to global markets and supply chains, significant uncertainty and a weaker global outlook. The effects of the pandemic on the global economy had a material impact on demand for the Company’s products and to the Company’s results of operations during the second quarter 2020 as our suppliers and customers reduced or halted production. To limit the spread of COVID-19, governments have taken various actions including travel bans and restrictions, quarantines, curfews, stay-at-home orders, social distancing guidelines and business shutdowns and closures. Despite these ongoing disruptions, the Company has continued its manufacturing operations throughout 2020 allowing the Company to deliver its products to customers without interruption. However, the Company’s manufacturing facilities in Hungary, India, and Tennessee suspended operations, for varying lengths of time, and the Company’s global manufacturing facilities have cut back on operating levels and shifts as a result of government orders, the Company’s inability to obtain component parts from suppliers and/or decreased customer demand. We are taking a variety of measures to promote the safety and security of our employees and to maintain operations with as minimal impact as possible to our stakeholders, including increased frequency of cleaning and disinfecting of facilities, social distancing, remote working when possible, travel restrictions and limitations on visitor access to facilities. We are also working to align operations, programs and spending across our entire business with current conditions, including reduced compensation expense through restructuring initiatives of both hourly and salary employees related to voluntary and involuntary separation programs, furloughs of a portion of our workforce, reducing overtime, and assessing the timing and cadence of various capital investments and product development initiatives.

Overview

6 Months Ended

Jun. 30, 2020

NOTE A. OVERVIEW

Overview

Allison Transmission Holdings, Inc. and its subsidiaries (“Allison,” or the “Company”) design and manufacture vehicle propulsion solutions, including commercial duty on-highway, off-highway and defense fully automatic transmissions and electric hybrid and fully electric systems. The business was founded in 1915 and has been headquartered in Indianapolis, Indiana since inception. Allison was an operating unit of General Motors Corporation from 1929 until 2007, when Allison once again became a stand-alone company. In March 2012, Allison began trading on the New York Stock Exchange under the symbol, “ALSN”.

Although approximately 77% of revenues were generated in North America in 2019, the Company has a global presence by serving customers in Europe, Asia, South America and Africa. The Company serves customers through an independent network of approximately 1,500 independent distributor and dealer locations worldwide.

In March 2020, the World Health Organization categorized the novel coronavirus ("COVID-19") as a pandemic, and it continues to impact the United States and other major markets in which the Company operates across the world, resulting in severe disruptions to global markets and supply chains, significant uncertainty and a weaker global outlook. The effects of the pandemic on the global economy had a material impact on demand for the Company’s products and to the Company’s results of operations during the second quarter 2020 as our suppliers and customers reduced or halted production.

To limit the spread of COVID-19, governments have taken various actions including travel bans and restrictions, quarantines, curfews, stay-at-home orders, social distancing guidelines and business shutdowns and closures. Despite these ongoing disruptions, the Company has continued its manufacturing operations throughout 2020 allowing the Company to deliver its products to customers without interruption. However, the Company’s manufacturing facilities in Hungary, India, and Tennessee suspended operations, for varying lengths of time, and the Company’s global manufacturing facilities have cut back on operating levels and shifts as a result of government orders, the Company’s inability to obtain component parts from suppliers and/or decreased customer demand.

We are taking a variety of measures to promote the safety and security of our employees and to maintain operations with as minimal impact as possible to our stakeholders, including increased frequency of cleaning and disinfecting of facilities, social distancing, remote working when possible, travel restrictions and limitations on visitor access to facilities. We are also working to align operations, programs and spending across our entire business with current conditions, including reduced compensation expense through restructuring initiatives of both hourly and salary employees related to voluntary and involuntary separation programs, furloughs of a portion of our workforce, reducing overtime, and assessing the timing and cadence of various capital investments and product development initiatives.