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Commitments and contingencies	12 Months Ended
Commitments and contingencies	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Commitments and contingencies Legal Proceedings From time to time we are a party, as plaintiff or defendant, to lawsuits in various jurisdictions in the ordinary course of business or in connection with our acquisition or disposal activities. We believe that the resolution of such claims will not have a material impact individually or in the aggregate on our operations or financial condition. Our best estimate of the outcome of the various disputes has been reflected in our financial statements as of December 31, 2015. Pledged Assets The book value of assets pledged under mortgage and overdraft facilities at December 31, 2015 and 2014 was $5,367.7 million, and $4,953.4 million, respectively. Purchase Commitments At December 31, 2015 and 2014 the Company had no contractual purchase commitments.