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Equity Based Compensation (Disclosure of Share-based Compensation Shares Authorized under Stock Option Plans by Exercise Price Range) (Details)
12 Months Ended
Dec. 31, 2016
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding | shares 2,573,223,000
Options Outstanding, Weighted-Average Remaining Contractual Life 6 years
Options Outstanding, Weighted Average Exercise Price $ 68.70
Options Exercisable | shares 1,888,577,000
Options Exercisable, Weighted-Average Exercise Price $ 60.43
$0.00 - $49.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding | shares 307,889,000
Options Outstanding, Weighted-Average Remaining Contractual Life 2 years 6 months
Options Outstanding, Weighted Average Exercise Price $ 40.35
Options Exercisable | shares 307,889,000
Options Exercisable, Weighted-Average Exercise Price $ 40.35
Exercise Price Range, Lower Range Limit 25.00
Exercise Price Range, Upper Range Limit $ 44.99
$50.00 - $59.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding | shares 1,224,805,000
Options Outstanding, Weighted-Average Remaining Contractual Life 4 years 11 months
Options Outstanding, Weighted Average Exercise Price $ 58.11
Options Exercisable | shares 1,224,805,000
Options Exercisable, Weighted-Average Exercise Price $ 58.11
$60.00 - $69.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding | shares 839,000
Options Outstanding, Weighted-Average Remaining Contractual Life 6 years
Options Outstanding, Weighted Average Exercise Price $ 60.24
Options Exercisable | shares 839,000
Options Exercisable, Weighted-Average Exercise Price $ 60.24
Exercise Price Range, Lower Range Limit 45.00
Exercise Price Range, Upper Range Limit $ 54.99
$70.00 - $79.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding | shares 211,708,000
Options Outstanding, Weighted-Average Remaining Contractual Life 7 years
Options Outstanding, Weighted Average Exercise Price $ 78.48
Options Exercisable | shares 154,393,000
Options Exercisable, Weighted-Average Exercise Price $ 78.48
Exercise Price Range, Lower Range Limit $ 55.00
$90.00 plus [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding | shares 827,982,000
Options Outstanding, Weighted-Average Remaining Contractual Life 8 years 8 months
Options Outstanding, Weighted Average Exercise Price $ 92.41
Options Exercisable | shares 200,651,000
Options Exercisable, Weighted-Average Exercise Price $ 91.48