Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation Plans

Stock-Based Compensation Disclosures (Table)

	For the year ended December 31,
	2011		2010		2009
	(in millions)
Compensation cost	$	46.3	$	50.8	$	48.8
Related income tax benefit		15.8		16.1		15.5
Capitalized as part of an asset		2.6		2.8		3.7

Nonqualified Stock Options Status (Table)

	Number of options		Weighted- average exercise price		Intrinsic Value
	(in millions)				(in millions)
Options outstanding at January 1, 2011		12.4	$	38.75
Granted		0.5		34.26
Exercised		0.4		18.83
Expired		0.3		33.44
Options outstanding at December 31, 2011		12.2	$	39.33	$	27.8
Options vested or expected to vest at December 31, 2011		12.2	$	39.34	$	27.8
Options exercisable at December 31, 2011		10.5	$	42.11	$	18.1

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		1.9		7
$21.70 — $32.32		1.6		5
$32.33 — $42.95		3.9		4
$42.96 — $53.58		1.7		4
$53.59 — $64.22		3.1		6
$11.07 — $64.22		12.2		5

Nonqualified Stock Options Fair Value (Table)

	For the year ended December 31,
Options	2011			2010			2009
Expected volatility		67.9	%		66.6	%		55.0	%
Expected term (in years)		6			6			6
Risk-free interest rate		2.5	%		2.8	%		2.1	%
Expected dividend yield		1.6	%		2.25	%		4.07	%
Weighted average estimated fair value	$	18.82		$	11.48		$	4.07

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, 2011		1.1	$	26.01
Granted		0.3		34.26
Canceled		0.3		59.00
Nonvested performance share awards at December 31, 2011		1.1	$	20.08

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, 2011		2.9	$	23.75
Granted		0.9		33.35
Vested		0.6		49.60
Canceled		0.1		21.86
Nonvested restricted stock units at December 31, 2011		3.1	$	21.68