Income Taxes, Schedule of Statutory Tax Rates (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statutory Tax Rates
Applicable statutory income tax rate (percent)	19.60%	29.80%	27.10%
U.S. [Member]
Statutory Tax Rates
Applicable statutory income tax rate (percent)	21.00%	35.00%	35.00%
Canada [Member]
Statutory Tax Rates
Applicable statutory income tax rate (percent)	15.00%	15.00%	15.00%
U.K. [Member]
Statutory Tax Rates
Applicable statutory income tax rate (percent)	19.00%	19.00%	20.00%
Ireland [Member]
Statutory Tax Rates
Applicable statutory income tax rate (percent)	13.00%	13.00%	13.00%
Peru [Member]
Statutory Tax Rates
Applicable statutory income tax rate (percent)	30.00%
Mexico [Member]
Statutory Tax Rates
Applicable statutory income tax rate (percent)	30.00%
Aruba [Member]
Statutory Tax Rates
Applicable statutory income tax rate (percent)			7.00%