Short-Term financing which is expected to be paid back relatively quickly, such as by a subsequent longer-term loan. Also called swing loan or bridge financing.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
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Contractual interest rate for funds borrowed, under the debt agreement.

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-Name Accounting Standards Codification
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-Section S99
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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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Debt Obligations - Bridge Credit Agreement (Details) £ in Millions	Oct. 20, 2017 USD ($)	Sep. 30, 2017 GBP (£)	Jul. 25, 2017 GBP (£)
Term Loan Facility
Debt Instrument [Line Items]
Bridge Loan \| £		£ 344.2	£ 1,115.0
4.00% Senior Notes, Maturity 2024 \| 4.000% Senior Notes due 2024
Debt Instrument [Line Items]
Aggregate principal amount \| $	$ 450,000,000.0
Stated interest rate	4.00%