Share-Based Awards (Stock Options Outstanding By Price Range) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2015 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Average Contractual Life, options outstanding	4 years 10 months 15 days
Options | shares	2,503
Weighted-Average Exercise Price, options outstanding	$ 47
Weighted-Average Contractual Life, Options exercisable	3 years 8 months 15 days
Options exercisable | shares	1,888
Weighted-Average Exercise Price, Options exercisable	$ 42
$10.01 To $20 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Average Contractual Life, options outstanding	3 years 1 month
Options | shares	322
Weighted-Average Exercise Price, options outstanding	$ 13
Lower Range Limit	10.01
Upper Range Limit	$ 20
$20.01 To $30 [ Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Average Contractual Life, options outstanding	4 years
Options | shares	200
Weighted-Average Exercise Price, options outstanding	$ 24
Lower Range Limit	20.01
Upper Range Limit	$ 30
$30.01 To $40 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Average Contractual Life, options outstanding	2 years 1 month
Options | shares	202
Weighted-Average Exercise Price, options outstanding	$ 39
Lower Range Limit	30.01
Upper Range Limit	$ 40
$40.01 To $50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Average Contractual Life, options outstanding	5 years 1 month
Options | shares	418
Weighted-Average Exercise Price, options outstanding	$ 44
Lower Range Limit	40.01
Upper Range Limit	$ 50
$50.01 To $60 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Average Contractual Life, options outstanding	4 years 5 months 15 days
Options | shares	464
Weighted-Average Exercise Price, options outstanding	$ 52
Lower Range Limit	50.01
Upper Range Limit	$ 60
$60.01 To $70 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Average Contractual Life, options outstanding	6 years 4 months 15 days
Options | shares	897
Weighted-Average Exercise Price, options outstanding	$ 64
Lower Range Limit	60.01
Upper Range Limit	$ 70