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GOODWILL AND OTHER INTANGIBLES (Tables)
 3 Months Ended
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of goodwill
(in millions)
Air Management$147 
e-Propulsion & Drivetrain281 
Fuel Injection— 
Aftermarket283 
Total acquisition date goodwill$711 
A summary of the changes in the carrying amount of goodwill are as follows:
(in millions)Air Managemente-Propulsion & DrivetrainAftermarketTotal
Gross goodwill balance, December 31, 2020$1,517 $1,313 $299 $3,129 
Accumulated impairment losses, December 31, 2020(502)— — (502)
Net goodwill balance, December 31, 2020$1,015 $1,313 $299 $2,627 
Goodwill during the period:
Measurement period adjustments(4)9 (4)1 
Other, primarily translation adjustment(13)(12)(7)(32)
Ending balance, March 31, 2021$998 $1,310 $288 $2,596 
Summary of intangible assets gross roll forward
The Company’s other intangible assets, primarily from acquisitions, consist of the following:
March 31, 2021December 31, 2020
(in millions)Estimated useful lives (years)Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount		Gross
Carrying
Amount		Accumulated
Amortization		Net
Carrying
Amount
Amortized intangible assets:
Patented and unpatented technology
7 - 15
$380 $81 $299 $383 $77 $306 
Customer relationships
7 - 15
868 276 592 893 272 621 
Miscellaneous
1 - 13
9 7 2 10 7 3 
Total amortized intangible assets1,257 364 893 1,286 356 930 
Unamortized trade names166 — 166 166 — 166 
Total other intangible assets$1,423 $364 $1,059 $1,452 $356 $1,096