2013 | 2012 | |||||||
Carrying Amount at Beginning of Period | $ | 665,944 | $ | 587,084 | ||||
Liabilities Incurred | 103,284 | 107,378 | ||||||
Liabilities Settled (1) | (70,510 | ) | (77,384 | ) | ||||
Accretion | 35,180 | 30,020 | ||||||
Revisions | 38,552 | 15,287 | ||||||
Foreign Currency Translations | (10,552 | ) | 3,559 | |||||
Carrying Amount at End of Period | $ | 761,898 | $ | 665,944 | ||||
Current Portion | $ | 43,857 | $ | 30,127 | ||||
Noncurrent Portion | $ | 718,041 | $ | 635,817 |