Aflac Incorporated is a general business holding company and oversees the operations of its subsidiaries by providing management services and making capital available. Its principal business is voluntary supplemental and life insurance, which is marketed and administered through American Family Life Assurance Company of Columbus (Aflac) in the United States (Aflac U.S.) and through Aflac Life Insurance Japan Ltd. in Japan (Aflac Japan). Most of Aflac's policies are individually underwritten and marketed through independent agents. Additionally, Aflac U.S. markets and administers group products through Continental American Insurance Company (CAIC), branded as Aflac Group Insurance. Aflac Japan offers supplemental insurance products including cancer plans, general medical indemnity plans, medical/sickness riders, care plans, living benefit life plans, ordinary life insurance plans and annuities. Aflac U.S. markets and administers group products through Continental American Insurance Company (CAIC).