Share-Based Payments (Details Textual) $ / shares in Units, $ in Millions		12 Months Ended
		Dec. 31, 2016 USD ($) Plan Increment $ / shares shares		Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 Increment
Share-based Compensation Arrangement by Share-based Payment Award
Shares issued under ESPP		6,200,000
Share-Based Payments (Textual)
Windfall tax benefits from vesting of stock awards, exercises of stock options and ESPP participation | $		$ 12.6		$ 78.2	$ 96.4
Unrecognized compensation cost related to unvested share-based compensation | $		$ 189.8
Weighted-average period to recognize the cost of unvested awards		1 year 11 months
Number of share-based compensation plans pursuant to which awards are currently being made | Plan		3
Number of shares granted under stock options		0		0	0
Total intrinsic value of options exercised | $		$ 10.4		$ 38.0	$ 42.7
Aggregate intrinsic values of options outstanding | $		$ 15.0
Weighted average remaining contractual term for options outstanding		2 years
Market stock units
Share-based Compensation Arrangement by Share-based Payment Award
Number of equal annual increments | Increment		3				4
Percentage of earnings of the target number of units granted based on actual stock performance (Minimum)		0.00%				0.00%
Percentage of earnings of the target number of units granted based on actual stock performance (Maximum)		200.00%				150.00%
Number of shares granted	[1]	168,000
Number of days for calculation of average closing stock price		30 days				60 days
Total fair value of vested awards | $		$ 39.3		$ 109.0	$ 117.4
Weighted average grant date fair value | $ / shares		$ 328.03	[1]	$ 493.43	$ 395.22
Cash settled performance units
Share-based Compensation Arrangement by Share-based Payment Award
Number of equal annual increments | Increment		3
Percentage of earnings of the target number of units granted based on actual stock performance (Minimum)		0.00%
Percentage of earnings of the target number of units granted based on actual stock performance (Maximum)		200.00%
Number of shares granted	[2]	86,000,000
Number of days for calculation of average closing stock price		30 days				60 days
Cash in settlement of CSPS awards upon vesting | $		$ 31.9		$ 79.8	$ 92.8
Performance units
Share-based Compensation Arrangement by Share-based Payment Award
Number of equal annual increments | Increment		3
Percentage of earnings of the target number of units granted based on actual stock performance (Minimum)		0.00%
Percentage of earnings of the target number of units granted based on actual stock performance (Maximum)		200.00%
Number of shares granted	[2]	55,000,000
PUs converted to share settlements				32,000
Number of days for calculation of average closing stock price		30 days
Cash in settlement of CSPS awards upon vesting | $		$ 8.1		$ 12.4
Time-vested restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award
Number of shares granted	[3]	649,000
Total fair value of vested awards | $		$ 104.6		$ 239.7	$ 281.1
Weighted average grant date fair value | $ / shares		$ 268.52	[3]	$ 388.88	$ 321.72
Directors Plan
Share-based Compensation Arrangement by Share-based Payment Award
Total number of shares of common stock for issuance		1,600,000
Ratio of total number of shares reserved under the plan		1.5-to-1
Omnibus Plans
Share-based Compensation Arrangement by Share-based Payment Award
Total number of shares of common stock for issuance		15,000,000
Ratio of total number of shares reserved under the plan		1.5-to-1
Attainment Of Performance Criteria in 2013 | Market stock units
Share-based Compensation Arrangement by Share-based Payment Award
Number of shares granted	[1]	15,000
Attainment Of Performance Criteria in 2012 | Market stock units
Share-based Compensation Arrangement by Share-based Payment Award
Number of shares granted	[1]	20,000
Director | Time-vested restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award
Number of shares granted	[3]	11,000
Settlement of PUs | Performance units
Share-based Compensation Arrangement by Share-based Payment Award
PUs converted to share settlements				11,000

[1] MSUs granted in 2016 include approximately 15,000 and 20,000 MSUs issued in 2016 based upon the attainment of performance criteria set for 2013 and 2012, respectively, in relation to awards granted in those years. The remainder of MSUs granted during 2016 include awards granted in conjunction with our annual awards made in February 2016 and MSUs granted in conjunction with the hiring of employees. These grants reflect the target number of shares eligible to be earned at the time of grant.

[2] CSPUs granted in 2016 include awards granted in conjunction with our annual awards made in February 2016 and CSPUs granted in conjunction with the hiring of employees. These grants reflect the target number of shares eligible to be earned at the time of grant.

[3] RSUs granted in 2016 primarily represent RSUs granted in conjunction with our annual awards made in February 2016 and awards made in conjunction with the hiring of new employees. RSUs granted in 2016 also include approximately 11,000 RSUs granted to our Board of Directors.