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Equity And Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2020

Equity And Earnings Per Share [Abstract]

IBG LLC Ownership of Member Interests

		IBG, Inc.		Holdings		Total
	Ownership %	18.7%		81.3%		100.0%
	Membership interests	78,057,622		338,670,642		416,728,264

Earnings Per Share Basic And Diluted

Basic earnings per share is calculated utilizing net income available for common stockholders divided by the weighted average number of shares of Class A and Class B common stock outstanding for that period.

		Three Months Ended June 30,						Six Months Ended June 30,
		2020			2019			2020			2019
		(in millions, except share or per share amounts)
Basic earnings per share
Net income available for common stockholders		$	32		$	32		$	78		$	81
Weighted average shares of common stock outstanding
Class A			77,357,509			75,868,249			77,054,288			75,486,725
Class B			100			100			100			100
			77,357,609			75,868,349			77,054,388			75,486,825
Basic earnings per share		$	0.41		$	0.43		$	1.01		$	1.08

Diluted earnings per share are calculated utilizing the Company’s basic net income available for common stockholders divided by diluted weighted average shares outstanding with no adjustments to net income available to common stockholders for potentially dilutive common shares.

		Three Months Ended June 30,						Six Months Ended June 30,
		2020			2019			2020			2019
		(in millions, except share or per share amounts)
Diluted earnings per share
Net income available for common stockholders		$	32		$	32		$	78		$	81
Weighted average shares of common stock outstanding
Class A
Issued and outstanding			77,357,509			75,868,249			77,054,288			75,486,725
Potentially dilutive common shares
Issuable pursuant to employee stock incentive plans			673,853			726,585			745,575			801,517
Class B			100			100			100			100
			78,031,462			76,594,934			77,799,963			76,288,342
Diluted earnings per share		$	0.40		$	0.43		$	1.00		$	1.07

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- Definition

Tabular disclosure of the ownership of IBG LLC member interests.

+ References

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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