Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

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

Schedule of Fair Value of Each Stock Option Award is Estimated on Grant Date, Using Option Valuation Models

The expected life is an estimate of the number of years a share-based award will be held before it is exercised.

	2014			2013			2012
Risk-free interest rate		1.96	%		1.20	%		1.18	%
Expected volatility		37	%		45	%		50	%
Expected life, in years		6.25			6.25			6.25
Expected dividend yield		—			—			—

Schedule of Stock Option Activity

Information regarding Time Stock Options and SARs and Performance Stock Options and SARs activity during 2014, 2013 and 2012 is summarized below (share amounts in thousands):

	Time Stock Options and SARs			Performance Stock Options and SARs			Total Stock Options and SARs			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value (dollars in millions)
Options outstanding, December 31, 2011		21,739			24,573			46,312		$	9.26
Granted		3,174			3,174			6,348			27.03
Exercised		(5,530	)		(5,128	)		(10,658	)		7.60
Cancelled		(192	)		(568	)		(760	)		9.49
Options outstanding, December 31, 2012		19,191			22,051			41,242			11.56
Granted		2,432			2,432			4,864			37.49
Exercised		(4,498	)		(5,843	)		(10,341	)		8.49
Cancelled		(316	)		(263	)		(579	)		25.50
Options and SARs outstanding, December 31, 2013		16,809			18,377			35,186			15.82
Granted		1,723			1,722			3,445			48.56
Exercised		(3,322	)		(5,234	)		(8,556	)		9.15
Cancelled		(159	)		(121	)		(280	)		29.54
Options and SARs outstanding, December 31, 2014		15,051			14,744			29,795			21.39		5.3 years	$	1,549
Options and SARs exercisable, December 31, 2014		10,102			9,796			19,898		$	13.79		3.9 years	$	1,186

Schedule of Restricted Stock Units Activity

Information regarding Time RSUs and Performance RSUs activity during 2014, 2013 and 2012 is summarized below (share amounts in thousands):

	Time RSUs			Performance RSUs			Total RSUs			Weighted Average Grant Date Fair Value
RSUs outstanding, December 31, 2011		80			—			80		$	30.00
Granted		3,162			1,485			4,647			26.98
Vested		(4	)		—			(4	)		30.00
Cancelled		(164	)		(75	)		(239	)		26.99
RSUs outstanding, December 31, 2012		3,074			1,410			4,484			27.03
Granted		3,305			1,554			4,859			37.43
Vested		(831	)		(352	)		(1,183	)		27.30
Cancelled		(449	)		(213	)		(662	)		31.91
RSUs outstanding, December 31, 2013		5,099			2,399			7,498			33.30
Granted		2,603			1,229			3,832			48.53
Vested		(1,423	)		(692	)		(2,115	)		32.56
Cancelled		(384	)		(155	)		(539	)		38.30
RSUs outstanding, December 31, 2014		5,895			2,781			8,676			39.89