Allenton Marketing Corporation reported the following stockholders’ equity at December 31 (adapted and in millions):

Common stock........................................ $ 243
Additional paid-in capital.......................... 231
Retained earnings.................................. 2,149
Treasury stock......................................... (601)
Total stockholders’ equity .................. $2,022

During the next year, Allenton purchased treasury stock at a cost of $22 million and resold treasury stock for $10 million (this treasury stock had cost the company $2 million). Record the purchase and resale of Allenton’s treasury stock. Overall, how much did stockholders’ equity increase or decrease from the two transactions?