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Accounts and Notes Receivable and Credit Quality of Notes Receivable - Notes Receivable Concentration Risk (Details) - Geographic concentration risk - Notes receivable | 6 Months Ended
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Jun. 30, 2016
Mexico |
Concentration Risk [Line Items] |
Concentration risk, percentage | 26.00%
Peru |
Concentration Risk [Line Items] |
Concentration risk, percentage | 17.00%
Columbia |
Concentration Risk [Line Items] |
Concentration risk, percentage | 6.00%
Argentina |
Concentration Risk [Line Items] |
Concentration risk, percentage | 9.00%
Other (less than 5% individually) |
Concentration Risk [Line Items] |
Concentration risk, percentage | 22.00%
Concentration risk, individual percentage | 0.05
Total international notes receivable as a percentage of total notes receivable |
Concentration Risk [Line Items] |
Concentration risk, percentage | 80.00%

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