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Comprehensive Income
3 Months Ended
Mar. 31, 2021
Comprehensive Income Detail [Abstract]  
Comprehensive Income 5.  Comprehensive Income

The table below presents comprehensive income and earnings per share on comprehensive income for the periods indicated.

Three Months Ended March 31,

2021

2020

(in millions, except share or per share amounts)

Comprehensive income available for common stockholders

$

90

$

39

Earnings per share on comprehensive income

Basic

$

0.99

$

0.51

Diluted

$

0.98

$

0.51

Weighted average common shares outstanding

Basic

90,789,321

76,751,168

Diluted

91,766,142

77,568,464