Aflac Incorporated provides financial protection to policyholders and customers through its subsidiaries in the United States and Japan. The Company's principal business is supplemental health and life insurance products. Its segments include Aflac Japan, which includes Aflac Life Insurance Japan Ltd. (ALIJ), and Aflac U.S., which includes American Family Life Assurance Company of Columbus (Aflac), American Family Life Assurance Company of New York (Aflac New York), Continental American Insurance Company (CAIC), Tier One Insurance Company (TOIC), and Aflac Benefits Solutions, Inc. (ABS). The Aflac Japan segment is the insurer in Japan in terms of cancer and medical (third sector insurance products) policies in force. The Company designs its United States insurance products to provide supplemental coverage for people who already have major medical or primary insurance coverage, as Aflac U.S. insurance policies pay benefits regardless of other insurance.