Share-Based Compensation Plans - Schedule of Grants and Weighted-average Per Share (Details) - $ / shares shares in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares granted, options and non-options	419	535
Weighted-average per share value, options and non-options	$ 68.99	$ 56.04
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted, options	145	166
Weighted-average per share fair value, options	$ 25.58	$ 19.68
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted, non-options	10	8
Weighted-average per share fair value, non-options	$ 88.87	$ 84.29
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted, non-options	149	231
Weighted-average per share fair value, non-options	$ 92.67	$ 73.02
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted, non-options	115	130
Weighted-average per share fair value, non-options	$ 91.41	$ 70.35

Share-based Compensation Arrangement by Share-based Payment Award, Options and Non-Option Instruments, Grants in Period

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options and Non-Option Instruments, Grants in Period, Weighted Average Grant Date Fair Value

+ References

No definition available.

+ Details

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

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