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Revenue Revenue (Policies)
3 Months Ended
Mar. 31, 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 related to revenue recognized in prior periods of $481 million and $885 million in the first quarter of 2019 and 2020, respectively. The change in estimate for the first quarter of 2020 includes additional marketing incentives offered to customers in connection with market conditions affected by the COVID-19 pandemic.