Annual report pursuant to Section 13 and 15(d)

Business combinations and disposals - Remploy (Details)

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Business combinations and disposals - Remploy (Details) - Remploy
£ in Millions, $ in Millions
Apr. 07, 2015
USD ($)
Apr. 07, 2015
GBP (£)
Business Acquisition [Line Items]    
Share capital acquired (as a percent) 70.00%  
Share capital held in trust for the benefit of employees (as a percent) 30.00%  
Preliminary Purchase Price Accounting    
Purchase consideration, net of cash acquired $ 3.0 £ 2.0
Contract-based intangible assets    
Preliminary Purchase Price Accounting    
Intangible assets $ 4.6  
Amortization period of intangible assets 2 years 2 years