Equity And Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Equity And Earnings Per Share [Abstract]


	IBG, Inc.	Holdings	Total
Ownership %	18.5%	81.5%	100.0%
Membership interests	76,759,595	338,670,642	415,430,237

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.



	Year-Ended December 31,
	2019		2018		2017
	(in millions, except share or per share amounts)
Basic earnings per share
Net income available for common stockholders	$	161	$	169	$	76
Weighted average shares of common stock outstanding
Class A		76,121,470		73,438,109		69,926,833
Class B		100		100		100
		76,121,570		73,438,209		69,926,933
Basic earnings per share	$	2.11	$	2.30	$	1.09

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.



	Year-Ended December 31,
	2019		2018		2017
	(in millions, except share or per share amounts)
Diluted earnings per share
Net income available for common stockholders	$	161	$	169	$	76
Weighted average shares of common stock outstanding
Class A
Issued and outstanding		76,121,470		73,438,109		69,926,833
Potentially dilutive common shares
Issuable pursuant to employee stock incentive plans		704,293		828,161		977,988
Class B		100		100		100
		76,825,863		74,266,370		70,904,921
Diluted earnings per share	$	2.10	$	2.28	$	1.07