Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line Two Entity Address, Address Line Two Entity File Number Entity File Number Legal Entity [Axis] Legal Entity [Axis] Cover page. Cover [Abstract] Title of 12(b) Security Title of 12(b) Security Entities [Table] Entities [Table] Local Phone Number Local Phone Number Entity Address, Address Line One Entity Address, Address Line One Soliciting Material Soliciting Material Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Entity Address, State or Province Entity Address, State or Province United Kingdom [Member] UNITED KINGDOM Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Written Communications Written Communications Entity Information [Line Items] Entity Information [Line Items] Trading Symbol Trading Symbol Entity Addresses, Address Type [Axis] Entity Addresses, Address Type [Axis] Entity Addresses [Table] Entity Addresses [Table] City Area Code City Area Code Address Type [Domain] Address Type [Domain] Document Period End Date Document Period End Date Country Region Country Region Netherlands [Member] NETHERLANDS Entity Address, City or Town Entity Address, City or Town Amendment Flag Amendment Flag Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Entity Address, Country Entity Address, Country Entity [Domain] Entity [Domain] Security Exchange Name Security Exchange Name Document Type Document Type Pre-commencement Tender Offer Pre-commencement Tender Offer Entity Central Index Key Entity Central Index Key Entity Addresses [Line Items] Entity Addresses [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company