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Comprehensive Income
9 Months Ended
Sep. 30, 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 September 30,

Nine Months Ended September 30,

2021

2020

2021

2020

(in millions, except share or per share amounts)

Comprehensive income available for common stockholders

$

33

$

54

$

220

$

129

Earnings per share on comprehensive income

Basic

$

0.34

$

0.69

$

2.37

$

1.67

Diluted

$

0.34

$

0.69

$

2.35

$

1.65

Weighted average common shares outstanding

Basic

96,229,958

78,509,625

92,814,767

77,543,008

Diluted

96,989,968

79,120,548

93,671,689

78,243,699