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Comprehensive Income and Equity - Common Stock Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended		90 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018
Equity [Abstract]
Aggregate Repurchases (1)	$ 295.7		$ 3,800.0
Cash paid for Repurchases	$ 284.7	$ 239.7
Number of Shares (in shares)	1,547,349
Average Price per Share (in dollars per share)	$ 191.09		$ 83.50
Remaining Purchase Authorization	$ 1,209.4		$ 1,209.4
Stock repurchased during period, prior to increased authorization, amount	$ 5.1

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- Definition

Stock Repurchased During Period, Prior to Increased Authorization, Value

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- Definition

The cash outflow to reacquire common stock during the period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

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Amount remaining of a stock repurchase plan authorized.

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Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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