Equity And Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Equity And Earnings Per Share [Abstract]


	IBG, Inc.	Holdings	Total
Ownership %	18.1%	81.9%	100.0%
Membership interests	75,101,860	338,691,717	413,793,577

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 March 31,
	2019		2018
	(in millions, except share or per share amounts)
Basic earnings per share
Net income available for common stockholders	$	49	$	46
Weighted average shares of common stock outstanding
Class A		75,100,962		71,475,850
Class B		100		100
		75,101,062		71,475,950
Basic earnings per share	$	0.65	$	0.64

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 March 31,
	2019		2018
	(in millions, except share or per share amounts)
Diluted earnings per share
Net income available for common stockholders	$	49	$	46
Weighted average shares of common stock outstanding
Class A
Issued and outstanding		75,100,962		71,475,850
Potentially dilutive common shares
Issuable pursuant to employee stock incentive plans		876,449		1,036,512
Class B		100		100
		75,977,511		72,512,462
Diluted earnings per share	$	0.64	$	0.63