Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2015

Stock-Based Compensation Plans

Stock-Based Compensation Disclosures (Table)

	For the year ended December 31,
	2015		2014		2013
	(in millions)
Compensation cost	$	69.7	$	66.2	$	65.2
Related income tax benefit		22.5		21.6		20.0
Capitalized as part of an asset		2.2		2.5		2.6

Nonqualified Stock Options Status (Table)

	Number of options		Weighted- average exercise price		Intrinsic value
	(in millions)				(in millions)
Options outstanding at January 1, 2015		8.6	$	42.68
Granted		0.6		51.33
Exercised		1.3		40.00
Expired		0.2		48.21
Options outstanding at December 31, 2015		7.7	$	43.71	$	63.4
Options vested or expected to vest at December 31, 2015		7.7	$	43.70	$	63.4
Options exercisable at December 31, 2015		6.5	$	43.47	$	59.7

Nonqualified Stock Options Remaining Contractual Lives and Range of Exercise Prices (Table)

Range of exercise prices	Number of options outstanding		Weighted- average remaining contractual life
	(in millions)
$11.07 - $21.69		0.8		3.2
$21.70 - $32.32		1.8		6.0
$32.33 - $42.95		0.4		5.2
$42.96 - $53.58		1.8		5.8
$53.59 - $64.22		2.9		1.7
$11.07 - $64.22		7.7		4.0

Nonqualified Stock Options Fair Value (Table)

	For the year ended December 31,
Options	2015			2014			2013
Expected volatility		52.2	%		53.2	%		53.3	%
Expected term (in years)		6.5			6.5			6.5
Risk-free interest rate		1.8	%		2.0	%		1.1	%
Expected dividend yield		2.81	%		2.50	%		3.00	%
Weighted average estimated fair value	$	20.43		$	18.89		$	11.95

Nonvested Performance Share Awards Activity (Table)

	Number of performance share awards		Weighted- average grant-date fair value
	(in millions)
Nonvested performance share awards at January 1, 2015		1.0	$	33.01
Granted		0.3		51.33
Vested		0.4		27.46
Nonvested performance share awards at December 31, 2015		0.9	$	41.57

Nonvested Restricted Stock Units Activity (Table)

	Number of restricted stock units		Weighted- average grant-date fair value
	(in millions)
Nonvested restricted stock units at January 1, 2015		3.1	$	33.87
Granted		0.9		51.35
Vested		1.0		27.93
Nonvested restricted stock units at December 31, 2015		3.0	$	41.32