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Revenue Revenue (Policies)
6 Months Ended
Jun. 30, 2020
Revenue from Contract with Customer [Abstract]  
Revenue [Policy Text Block]
The amount of consideration we receive and revenue we recognize on our vehicles, parts, and accessories varies with changes in return rights and marketing incentives we offer to our customers and their customers. Estimates of marketing incentives are based on expected retail and fleet sales volumes, mix of products to be sold, and incentive programs to be offered. Customer acceptance of products and programs, as well as other market conditions, will impact these estimates. As a result of changes in our estimate of marketing incentives, we recorded a decrease in revenue of $350 million in the second quarter of 2019 and an increase in revenue of $48 million in the second quarter of 2020 related to revenue recognized in prior periods.