Interim Financial Statements - Recent Accounting Pronouncements (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Recent Accounting Pronouncements
Decrease in other current assets due to reclassification related to ASU	$ (101.7)	$ (85.6)
Decrease in current portion of long-term debt due to reclassifcation related to ASU	(47.7)	(28.0)
Decrease in other long-term assets due to reclassifcation related to ASU	(19.6)	(19.2)
Decrease in long-term debt due to reclassifcation related to ASU	$ (1,613.1)	(1,247.0)
Accounting Standards Update 2015-03
Recent Accounting Pronouncements
Decrease in other current assets due to reclassification related to ASU		1.2
Decrease in current portion of long-term debt due to reclassifcation related to ASU		1.2
Decrease in other long-term assets due to reclassifcation related to ASU		8.1
Decrease in long-term debt due to reclassifcation related to ASU		$ 8.1

Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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