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Comprehensive Income
6 Months Ended
Jun. 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 June 30,

Six Months Ended June 30,

2021

2020

2021

2020

(in millions, except share or per share amounts)

Comprehensive income available for common stockholders

$

97

$

36

$

187

$

75

Earnings per share on comprehensive income

Basic

$

1.06

$

0.46

$

2.06

$

0.97

Diluted

$

1.05

$

0.46

$

2.04

$

0.96

Weighted average common shares outstanding

Basic

91,365,234

77,357,609

91,078,868

77,054,388

Diluted

92,199,169

78,031,462

91,984,246

77,799,963