Equity And Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2016

Equity And Earnings Per Share [Abstract]



	IBG, Inc.	Holdings	Total
Ownership %	16.6%	83.4%	100.0%
Membership interests	67,987,957	341,444,304	409,432,261

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 September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015

	(in millions, except for shares or per share amounts)
Basic earnings per share
Net income available for common stockholders	$	20	$	22	$	80	$	32
Weighted average shares of common stock outstanding
Class A		67,083,554		62,458,555		65,351,742		60,152,425
Class B		100		100		100		100
		67,083,654		62,458,655		65,351,842		60,152,525
Basic earnings per share	$	0.30	$	0.35	$	1.22	$	0.53

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 September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015

	(in millions, except for shares or per share amounts)
Diluted earnings per share
Net income available for common stockholders	$	20	$	22	$	80	$	32
Weighted average shares of common stock outstanding
Class A
Issued and outstanding		67,083,554		62,458,555		65,351,742		60,152,425
Potentially dilutive common shares
Issuable pursuant to employee stock incentive plans		1,386,570		1,570,076		1,386,912		1,494,403
Class B		100		100		100		100
		68,470,224		64,028,731		66,738,754		61,646,928
Diluted earnings per share	$	0.30	$	0.35	$	1.20	$	0.52