The company measures performance by segment.
The Unum U.S. segment reported adjusted operating income of $115.7 million in the first quarter of 2021, a decrease of 55.8% from $261.8 million in the first quarter of 2020.
The Unum International segment reported adjusted operating income of $26.4 million in the first quarter of 2021, an increase of 36.1% from $19.4 million in the first quarter of 2020.
The Colonial life segment reported a 9.6% decrease in adjusted operating income to $73.3 million in the first quarter of 2021, compared to $81.1 million in the first quarter of 2020.
The closed block segment reported adjusted operating income of $97 million in the first quarter of 2021, which excludes the impacts from the second phase of the closed block individual disability reinsurance transaction of $139.3 million and the amortization of cost of reinsurance related to the closed block individual disability reinsurance transaction of $20 million, compared to $29.7 mill