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.

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

The number of derivative instruments of a particular group held by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

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- Details

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- Details

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- Details

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Derivative Instruments (Narrative) (Details) £ in Thousands, € in Millions	Dec. 31, 2019 GBP (£) derivative_contract	Dec. 09, 2019 GBP (£)	Oct. 31, 2019 GBP (£) derivative_contract	Oct. 24, 2019 GBP (£)	Mar. 31, 2019 EUR (€)	Mar. 01, 2019 EUR (€)	Dec. 20, 2018 EUR (€)
Derivative [Line Items]
Number of derivative contracts \| derivative_contract	2		2
Foreign Exchange Forward
Derivative [Line Items]
Derivative, notional amount		£ 15,000		£ 31,000
Not Designated as Hedging Instrument \| Foreign Exchange Forward
Derivative [Line Items]
Derivative, notional amount	£ 15,000		£ 31,000
Maintal Logistics \| Not Designated as Hedging Instrument \| Foreign Exchange Forward
Derivative [Line Items]
Derivative, notional amount \| €							€ 15.0
ABC Westland \| Not Designated as Hedging Instrument \| Foreign Exchange Forward
Derivative [Line Items]
Derivative, notional amount \| €					€ 46.0	€ 46.0
Charles Tyrwhitt DC \| Not Designated as Hedging Instrument \| Foreign Exchange Forward
Derivative [Line Items]
Derivative, notional amount				33,400
DSG Bristol \| Not Designated as Hedging Instrument \| Foreign Exchange Forward
Derivative [Line Items]
Derivative, notional amount				£ 18,600
Royal Mail Edinburgh \| Not Designated as Hedging Instrument \| Foreign Exchange Forward
Derivative [Line Items]
Derivative, notional amount		£ 26,000