Write-Downs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	$ 313,337	$ 1,472,721	$ 772,993
Impairment of Long-Lived Assets Held-for-use, Net of Tax	276,500	1,021,800	593,200
Coeur Capital [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	22,100
Impairment of Long-Lived Assets Held-for-use, Net of Tax	16,300
Kensington [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs			130,700
La Preciosa [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs		372,500
Impairment of Long-Lived Assets Held-for-use, Net of Tax		244,900
San Bartolome [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	66,700
Palmarejo [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	224,500	784,000	642,100
Impairment of Long-Lived Assets Held-for-use, Net of Tax	193,500	504,500	462,300
Mining Properties and Mineral Rights [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	244,611	1,229,844	621,901
Mining Properties and Mineral Rights [Member] | Palmarejo [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	205,803	668,803	539,359
Mining Properties and Mineral Rights [Member] | San Bartolome [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	16,690	32,328	0
Mining Properties and Mineral Rights [Member] | Kensington [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	0	67,671	82,337
Mining Properties and Mineral Rights [Member] | La Preciosa [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	0	371,411	0
Mining Properties and Mineral Rights [Member] | Joaquin Project - Argentina [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	0	83,429	0
Mining Properties and Mineral Rights [Member] | Coeur Capital [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	22,118	6,202	0
Mining Properties and Mineral Rights [Member] | Martha [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	0	0	205
Property, Plant and Equipment, Other Types [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	68,726	242,877	151,092
Property, Plant and Equipment, Other Types [Member] | Palmarejo [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	18,704	115,235	102,735
Property, Plant and Equipment, Other Types [Member] | San Bartolome [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	50,022	86,426	0
Property, Plant and Equipment, Other Types [Member] | Kensington [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	0	40,161	48,357
Property, Plant and Equipment, Other Types [Member] | La Preciosa [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Write-downs	$ 0	$ 1,055	$ 0