Coach CIgna

The deal could value the unit between $3 billion and $4 billion. 

The operations to be acquired include Cigna's A&H and life business in Korea, Taiwan, New Zealand, Thailand, Hong Kong and Indonesia and its interest in a joint venture in Turkey.

The companies will offer a choice of flexible medical and critical illness protection, supplemented by comprehensive digital healthcare services that are designed in response to women's health needs across their different life stages.