Abstract: Various technologies described herein pertain to detecting machine translated content. Documents in a document pair are mutual lingual translations of each other. Further, document level features of the documents in the document pair can be identified. The document level features can correlate with translation quality between the documents in the document pair. Moreover, statistical classification can be used to detect whether the document pair is generated through machine translation based at least in part upon the document level features. Further, a first document can be a machine translation of a second document in the document pair or a disparate document when generated through machine translation.