Note 7 - Redeemable Noncontrolling Interests (Details Textual) - Hydro-Québec [Member]	Jun. 30, 2021	Apr. 14, 2020
Dana TM4 Inc [Member
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	45.00%
Dana (Beijing) Electric Motor Co, Ltd [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	45.00%
Dana TM4 USA, LLC [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	45.00%
Dana TM4 Private Limited [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	45.00%
Dana TM4 Italia S.r.l. [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	45.00%
Ashwoods [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	45.00%	45.00%