Description of the Business	12 Months Ended
Dec. 31, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Description of the Business	(1) Description of the Business Metaldyne Performance Group Inc. is a leading provider of components for use in engine, transmission and driveline (“Powertrain”) and chassis, suspension, steering and brake component (“Safety-Critical”) Platforms for the global light, commercial and industrial vehicle markets. We produce these components using complex metal-forming manufacturing technologies and processes for a global customer base of vehicle original equipment manufacturers (“OEMs”) and tier I suppliers (“Tier I suppliers”). Our components help OEMs meet fuel economy, performance and safety standards. Our metal-forming manufacturing technologies and processes include aluminum casting (“Aluminum Die Casting”), cold, warm or hot forging (“Forging”), iron casting (“Iron Casting”), and powder metal forming (“Powder Metal Forming”), as well as value-added precision machining and assembly (“Advanced Machining and Assembly”). These technologies and processes are used to create a wide range of customized Powertrain and Safety-Critical components that address requirements for power density (increased component strength to weight ratio), power generation, power / torque transfer, strength and Noise, Vibration and Harshness (“NVH”). Metaldyne Performance Group Inc. is organized and operated as three operating segments: the HHI segment, the Metaldyne segment and the Grede segment.

Description of the Business

12 Months Ended

Dec. 31, 2016

Organization Consolidation And Presentation Of Financial Statements [Abstract]

(1) Description of the Business

Metaldyne Performance Group Inc. is a leading provider of components for use in engine, transmission and driveline (“Powertrain”) and chassis, suspension, steering and brake component (“Safety-Critical”) Platforms for the global light, commercial and industrial vehicle markets. We produce these components using complex metal-forming manufacturing technologies and processes for a global customer base of vehicle original equipment manufacturers (“OEMs”) and tier I suppliers (“Tier I suppliers”). Our components help OEMs meet fuel economy, performance and safety standards. Our metal-forming manufacturing technologies and processes include aluminum casting (“Aluminum Die Casting”), cold, warm or hot forging (“Forging”), iron casting (“Iron Casting”), and powder metal forming (“Powder Metal Forming”), as well as value-added precision machining and assembly (“Advanced Machining and Assembly”). These technologies and processes are used to create a wide range of customized Powertrain and Safety-Critical components that address requirements for power density (increased component strength to weight ratio), power generation, power / torque transfer, strength and Noise, Vibration and Harshness (“NVH”). Metaldyne Performance Group Inc. is organized and operated as three operating segments: the HHI segment, the Metaldyne segment and the Grede segment.