SUBSEQUENT EVENTS

12 Months Ended

Dec. 31, 2017

Subsequent Events [Abstract]

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS

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 will be payable in the form of one additional common stock share for every share of common stock held. The pro forma diluted earnings per common share attributable to Aflac Incorporated shareholders in this note have been adjusted to reflect the stock split for all periods presented. All other share-based data, including the number of shares outstanding and related prices, per share amounts, and share authorizations and conversions have not been adjusted to reflect the stock split for any of the periods presented.

As of December 31, 2017, the Company had outstanding approximately 390.5 million shares of common stock. Upon completion of the split, the outstanding shares of common stock will increase to approximately 781.0 million shares.

	Years ended December 31,
Unaudited pro forma	2017		2016		2015
Diluted earnings per common share attributable to Aflac Incorporated shareholders, adjusted for the two-for-one stock split	$	5.77	$	3.21	$	2.93