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Stockbased Compensation Expense (Tables)
 12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
The components of stock-based compensation expense are primarily included in selling, general and administrative expenses and are as follows:
(In millions)
 
2016

 
2015

 
2014

 
 
 
 
 
 
 
Stock Option Awards
 
$
41.3

 
$
43.7

 
$
45.7

Restricted Unit Awards
 
92.2

 
81.3

 
71.4

 
 
 
 
 
 
 
Total Stock-based Compensation Expense
 
$
133.5

 
$
125.0

 
$
117.1
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The weighted average assumptions used in the Black-Scholes option pricing model are as follows: 
 
 
2016

 
2015

 
2014

 
 
 
 
 
 
 
Expected Stock Price Volatility
 
21
%
 
24
%
 
25
%
Risk Free Interest Rate
 
1.2
%
 
1.4
%
 
1.3
%
Expected Life of Options (years)
 
4.3

 
4.3

 
4.4

Expected Annual Dividend
 
0.5
%
 
0.5
%
 
0.5
%
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
A summary of the company’s option activity for the year ended December 31, 2016 is presented below:
 
 
Shares
(in millions)

 
Weighted Average Exercise Price

 
Weighted Average Remaining Contractual Term
(in years)
 
Aggregate Intrinsic
Value (a)
(in millions)

 
 
 
 
 
 
 
 
 
Outstanding at December 31, 2015
 
9.6

 
$
85.30

 

 

Granted
 
1.8

 
131.22

 

 

Exercised
 
(2.2
)
 
62.55

 

 

Canceled/Expired
 
(0.4
)
 
119.52

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding at December 31, 2016
 
8.8

 
$
98.69

 
3.9
 

 
 
 
 
 
 
 
 
 
Vested and Unvested Expected to Vest at December 31, 2016
 
8.5

 
$
97.50

 
3.8
 
$
371.7

 
 
 
 
 
 
 
 
 
Exercisable at December 31, 2016
 
4.6

 
$
75.05

 
2.7
 
$
307.1

(a)
Market price per share on December 31, 2016 was $141.10. The intrinsic value is zero for options with exercise prices above the market price.
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]
A summary of the company’s option activity for the year ended December 31, 2016 is presented below:
 
 
Shares
(in millions)

 
Weighted Average Exercise Price

 
Weighted Average Remaining Contractual Term
(in years)
 
Aggregate Intrinsic
Value (a)
(in millions)

 
 
 
 
 
 
 
 
 
Outstanding at December 31, 2015
 
9.6

 
$
85.30

 

 

Granted
 
1.8

 
131.22

 

 

Exercised
 
(2.2
)
 
62.55

 

 

Canceled/Expired
 
(0.4
)
 
119.52

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding at December 31, 2016
 
8.8

 
$
98.69

 
3.9
 

 
 
 
 
 
 
 
 
 
Vested and Unvested Expected to Vest at December 31, 2016
 
8.5

 
$
97.50

 
3.8
 
$
371.7

 
 
 
 
 
 
 
 
 
Exercisable at December 31, 2016
 
4.6

 
$
75.05

 
2.7
 
$
307.1

(a)
Market price per share on December 31, 2016 was $141.10. The intrinsic value is zero for options with exercise prices above the market price.
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
A summary of the company’s restricted unit activity for the year ended December 31, 2016 is presented below:
 
 
Units
(in thousands)

 
Weighted
Average
Grant-Date
Fair Value

 
 
 
 
 
Unvested at December 31, 2015
 
1,561

 
$
113.64

Granted
 
786

 
131.01

Vested
 
(885
)
 
102.97

Forfeited
 
(125
)
 
125.52

 
 
 
 
 
Unvested at December 31, 2016
 
1,337

 
$
129.80