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STOCK-BASED COMPENSATION. (Future Stock-Based Compensation Expense) (Details) $ in Millions	Dec. 31, 2018 USD ($)
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
First quarter 2019	$ 51.4
Second quarter 2019	50.6
Third quarter 2019	50.5
Fourth quarter 2019	45.2
Total 2019	197.7
2020 through 2024	188.6
Total	$ 386.3

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Unrecognized cost of unvested share-based compensation awards to be recognized in the second fiscal year through vesting period.

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Unrecognized cost of unvested share-based compensation awards to be recognized in the next fiscal year.

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Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost To Be Recognized Quarter Four Of Next Fiscal Year

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Unrecognized cost of unvested share-based compensation awards.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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