Over some three years over which the inaccurate financial reporting took place, Macy's incurred $4.36 billion in delivery expenses, the company said. At most, the hidden expenses made up 3.5% of the overall costs faced by the department. "The dollar amount is small relative to Macy's operations," Johanns said.

Macy's M.N on Monday delayed its third-quarter results after finding that an employee hid as much as $154 million in expenses over years, instead issuing preliminary sales figures that fell short of Wall Street expectations.

CNN’s Vanessa Yurkevich reports on Macy’s announcing that a single employee was responsible for so many accounting irregularities that the company was forced to delay its quarterly earnings report.