Equity And Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Equity And Earnings Per Share [Abstract]


	IBG, Inc.	Holdings	Total
Ownership %	18.5%	81.5%	100.0%
Membership interests	76,727,339	338,691,717	415,419,056

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,
	2019		2018		2019		2018
	(in millions, except share or per share amounts)
Basic earnings per share
Net income available for common stockholders	$	32	$	41	$	81	$	87
Weighted average shares of common stock outstanding
Class A		75,868,249		72,476,629		75,486,725		71,979,004
Class B		100		100		100		100
		75,868,349		72,476,729		75,486,825		71,979,104
Basic earnings per share	$	0.43	$	0.57	$	1.08	$	1.21

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,
	2019		2018		2019		2018
	(in millions, except share or per share amounts)
Diluted earnings per share
Net income available for common stockholders	$	32	$	41	$	81	$	87
Weighted average shares of common stock outstanding
Class A
Issued and outstanding		75,868,249		72,476,629		75,486,725		71,979,004
Potentially dilutive common shares
Issuable pursuant to employee stock incentive plans		726,585		852,767		801,517		944,640
Class B		100		100		100		100
		76,594,934		73,329,496		76,288,342		72,923,744
Diluted earnings per share	$	0.43	$	0.57	$	1.07	$	1.20