Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award

We recognized the following share-based compensation expense during each of the years ended December 31, 2015, 2014 and 2013:

	Year Ended December 31,
(Dollars in millions)	2015		2014		2013
Share-based compensation	$	73	$	56	$	66
Related tax benefit	14		12		11

Schedule of Deferred Compensation Arrangement with Individual, Share-based Payments

A summary of option activity for the year ended December 31, 2015, is presented below:

	Options		Weighted Average Exercise Price		Weighted Average Remaining Term	Aggregate Intrinsic Value
	(In thousands)					(In thousands)
Outstanding at December 31, 2014	6,643		$	9.52	1.18 years	$	23,500
Exercised	(4,066	)	6.35
Expired	(74	)	9.56
Outstanding and Vested at December 31, 2015	2,503		14.67		0.93 years	36
Exercisable at December 31, 2015	15		5.94		0.74 years	36

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of RSA and RSU activity for the year ended December 31, 2015 is presented below:

	RSA		Weighted Average Grant Date Fair Value		RSU		Weighted Average Grant Date Fair Value
	(In thousands)				(In thousands)
Non-Vested at December 31, 2014	2,254		$	15.31	4,300		$	17.21
Granted	—		—		10,492		11.94
Vested	(1,111	)	15.12		(1,981	)	16.53
Forfeited	(272	)	17.55		(847	)	13.71
Non-Vested at December 31, 2015	871		14.85		11,964		12.94

Schedule of Nonvested Performance-based Units Activity

A summary of performance unit activity for the year ended December 31, 2015, is presented below:

	Performance Units		Weighted Average Grant Date Fair Value
	(In thousands)
Non-vested at December 31, 2014	1,948		$	12.74
Granted	1,561		10.45
Vested	—		—
Forfeited	(652	)	14.14
Non-vested at December 31, 2015	2,857		11.17