Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Stockholders' Equity Note [Abstract]

Schedule of Treasury Stock by Class

In July 2018, the Board of Directors authorized a $1.0 billion share repurchase program (exclusive of any commissions and other transaction fees and costs). The program replaced the $245 of authority remaining under the Company's previously authorized share repurchase program. In January 2019, the Board of Directors authorized an incremental $1.0 billion share repurchase program (exclusive of any commissions and other transaction fees and costs).

The following provides cumulative information relating to our share repurchase program from its inception in July 2018 through December 31, 2018 (shares in thousands):

Authorized share repurchase program	$	1,000
Share repurchase cost	$	700
Share repurchase fees	$	—
Number of shares repurchased	26,093

Schedule of Common and Treasury Stock Changes

The following table reflects the changes in Common and Treasury stock shares (shares in thousands):

	Common Stock Shares		Treasury Stock Shares
Balance at December 31, 2015	253,209		—
Stock based compensation plans, net	385		—
Balance at December 31, 2016	253,594		—
Stock based compensation plans, net	1,019		—
Balance at December 31, 2017	254,613		—
Stock based compensation plans, net	1,103		—
Acquisition of Treasury stock	—		26,093
Cancellation of Treasury stock	(24,026	)	(24,026	)
Balance at December 31, 2018	231,690		2,067