In the case of Detroit Edison Co. v. Commissioner of Internal Revenue, 1942, the U.S Supreme Court ruled that funds received by Detroit Edison from customers to help cover the costs of constructing facilities to provide them with electricity were not contributions in aid of construction (CIAC) and therefore could not be excluded from gross income for tax purposes. The court held that these payments represented a form of advance payment for services and should be considered as part of the company's taxable income. This decision clarified how utility companies should account for customer contributions towards infrastructure development in their tax returns.

In the dissenting opinion for Detroit Edison Co. v. Commissioner of Internal Revenue, Justice Black argued that the majority's decision was inconsistent with previous rulings and allowed corporations to avoid paying their fair share of taxes. He contended that the Court had previously held in other cases that contributions made by customers should be considered income to a corporation, regardless of whether they were used for capital improvements or operating expenses. In this case, however, he believed the majority wrongly decided that such contributions could be excluded from taxable income if they were used for capital expenditures rather than operating costs. This distinction did not exist in prior decisions and created an unwarranted tax loophole for corporations at public expense according to him.