Equity Based Compensation (Disclosure of Share-based Compensation Shares Authorized under Stock Option Plans by Exercise Price Range) (Details)	12 Months Ended
	Dec. 31, 2015 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding | shares	2,825,440,000
Options Outstanding, Weighted-Average Remaining Contractual Life	6 years 1 month
Options Outstanding, Weighted Average Exercise Price	$ 62.82
Options Exercisable | shares	2,087,712,000
Options Exercisable, Weighted-Average Exercise Price	$ 56.12
$25.00 - $44.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding | shares	208,347,000
Options Outstanding, Weighted-Average Remaining Contractual Life	3 years
Options Outstanding, Weighted Average Exercise Price	$ 32.20
Options Exercisable | shares	208,347,000
Options Exercisable, Weighted-Average Exercise Price	$ 32.20
Exercise Price Range, Lower Range Limit	25.00
Exercise Price Range, Upper Range Limit	$ 44.99
$45.00 - $54.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding | shares	267,249,000
Options Outstanding, Weighted-Average Remaining Contractual Life	3 years 9 months
Options Outstanding, Weighted Average Exercise Price	$ 47.11
Options Exercisable | shares	267,249,000
Options Exercisable, Weighted-Average Exercise Price	$ 47.11
Exercise Price Range, Lower Range Limit	45.00
Exercise Price Range, Upper Range Limit	$ 54.99
$55.00 plus [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding | shares	2,349,844,000
Options Outstanding, Weighted-Average Remaining Contractual Life	6 years 7 months
Options Outstanding, Weighted Average Exercise Price	$ 67.32
Options Exercisable | shares	1,612,116,000
Options Exercisable, Weighted-Average Exercise Price	$ 60.71
Exercise Price Range, Lower Range Limit	$ 55.00