Share Repurchases (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Schedule of Shares Repurchased

Shares of treasury stock

Shares and dollars in millions	Shares	Amount
Balance at December 31, 2017	36.5	$	818
Treasury stock acquired, net of ESPP shares issued	—	(1		)
Balance at December 31, 2018	36.5	817
Treasury stock acquired, net of ESPP shares issued	—	—
Balance at December 31, 2019	36.5	$	817

The table below presents information on our annual share repurchases activity under these programs:

	Year ending December 31, 2019
	Number of Shares	Average Price per Share		Dollars in Millions
Repurchases under the $350 million authorized share repurchase program	—	$	—	$	—
Repurchases under the existing share maintenance program	—	—		—
Withheld to cover shares	194,124	20.59		4
Total	194,124	$	20.59	$	4
	Year ending December 31, 2018
	Number of Shares	Average Price per Share		Dollars in Millions
Repurchases under the $350 million authorized share repurchase program	—	$	—	$	—
Repurchases under the existing share maintenance program	—	—		—
Withheld to cover shares	175,469	15.81		3
Total	175,469	$	15.81	$	3