In its second quarter 2018 10-Q, Aflac Incorporated included the following information:

Stock split: On February 13, 2018, the Board of Directors of the Parent Company declared a two-for-one stock split of the Company's common stock in the form of a 100% stock dividend payable on March 16, 2018 to shareholders of record at the close of business on March 2, 2018. The stock split was payable in the form of one additional common stock share for every share of common stock held. All equity and share-based data, including the number of shares outstanding and per share amounts, have been adjusted to reflect the stock split for all periods presented in this Quarterly Report on Form 10-Q. Aflac effected this stock split as a large stock dividend. What changes has Aflac made to its balance sheet as a result of this action?