Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2014

Summary of Fair Values for Stock-based Awards Granted Using Black-Scholes Option Pricing Model

The fair values for option awards granted in 2014, 2013 and 2012 were estimated at the date of grant using the Black-Scholes option pricing model with the following weighted-average assumptions:

	For the Year Ended December 31
	2014		2013		2012
Weighted-average fair value of grants	$	2.43	$	5.31	$	5.07
Risk-free interest rate (range)– Based upon the U.S. Treasury Strip with a    maturity date that approximates the expected term of the award	1.2%–1.4%		0.9%–1.8%		0.5%–1.1%
Dividend yield (range) – Forecasted dividend yield based on the expected    life	4.5%–4.6%		4.1%–4.5%		3.6%–4.7%
Expected life (range)– Derived by referring to actual exercise experience	4–5 years		5–6 years		4–5 years
Expected volatility (range)– Derived by using a 50/50 blend of implied and    historical changes in the Company's historical stock prices over a time    frame consistent with the expected life of the award	24.7%–28.5%		49.2%–52.5%		50.8%–66.8%

Summary of Stock Option Activity

The following table reflects the stock option activity described above:

	Number of Options (Thousands)						Weighted-		Weighted- Average		Aggregate
	Employees			Directors			Average Exercise Price		Remaining Contractual Term (Years)		Intrinsic Value (Thousands)
Balance December 31, 2011		2,683			10		$	25.35
Granted		345			—			13.87
Exercised		(266	)		—			6.54
Forfeited		(166	)		(10	)		26.21
Balance December 31, 2012		2,596			—			25.70
Granted		345			—			16.91
Exercised		(87	)		—			9.25
Forfeited		(193	)		—			28.10
Balance December 31, 2013		2,661			—			24.77
Granted		774			—			16.61
Exercised		(154	)		—			10.02
Forfeited		(320	)		—			33.40
Balance December 31, 2014		2,961			—		$	22.48		5.6	$	11,088
Options exercisable at December 31,
2014		1,922			—		$	25.75		4.0	$	9,077
2013		2,052			—			27.53		4.1		6,491
2012		2,035			—			29.12		4.5		6,538

Summary of Characteristics of Options Outstanding

The following table summarizes the characteristics of the options outstanding at December 31, 2014 (in thousands):

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Outstanding at 12/31/14		Weighted-Average Remaining Contractual Life (Years)		Weighted-Average Exercise Price		Exercisable at 12/31/14		Weighted-Average Exercise Price
$0.00–$6.50		471		4.0	$	6.01		471	$	6.01
$6.51–$12.50		200		5.3		10.42		197		10.39
$12.51–$21.00		1,480		8.2		15.88		444		14.56
$21.01–$45.50		490		2.0		38.74		490		38.74
$45.51–$69.50		320		1.8		59.96		320		59.96
		2,961		5.7	$	22.48		1,922	$	25.75

Activities for Unvested Stock Option Awards

The following table reflects the activity for unvested stock option awards for the year ended December 31, 2014 (options in thousands):

	Options			Weighted-Average Grant Date Fair Value
Unvested at December 31, 2013	$	609		$	5.26
Granted		774			2.43
Vested		(273	)		5.28
Forfeited		(71	)		3.95
Unvested at December 31, 2014	$	1,039		$	3.23

Summary of Employee Stock Option Exercises

The Company settles employee stock option exercises primarily with newly issued common shares or with treasury shares, if available (in millions).  

	For the Year Ended December 31,
	2014		2013		2012
Cash received for exercise price	$	1.5	$	0.8	$	1.7
Intrinsic value		1.1		0.7		2.2

VSEP grants [Member]

Summary of Fair Value of Value Sharing Equity Program Grants

The fair value of the 2013 VSEP awards was estimated on the date of grant using a Monte Carlo approach model based on the following assumptions:

	Range
Risk-free interest rate		0.36%
Weighted-average dividend yield		4.0%
Expected life	3 years
Expected volatility	18%–24%

Activities for Unvested Restricted Stock Awards

The following table reflects the activity for the unvested awards pursuant to all restricted stock grants and grants under the 2009 VSEP and 2013 VSEP for the year ended December 31, 2014 (awards in thousands):

	Awards			Weighted-Average Grant Date Fair Value
Unvested at December 31, 2013		1,719		$	14.35
Granted		765			17.43
Vested		(1,261	)		14.66
Forfeited		(58	)		10.59
Unvested at December 31, 2014		1,165		$	16.00