XML 122 R100.htm IDEA: XBRL DOCUMENT v3.3.1.900
Subsequent Events (Details) - $ / shares
12 Months Ended
Jan. 25, 2016
Nov. 13, 2015
Aug. 14, 2015
May. 14, 2015
Feb. 13, 2015
Nov. 14, 2014
Aug. 14, 2014
May. 14, 2014
Feb. 13, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Subsequent Event [Line Items]                        
Quarterly cash distribution declared (dollars per unit)                   $ 2.240 $ 1.900 $ 1.600
Limited Partners' Capital Account, Units Outstanding   $ 0.570 $ 0.550 $ 0.530 $ 0.510 $ 0.490 $ 0.475 $ 0.425 $ 0.415      
Subsequent Event [Member]                        
Subsequent Event [Line Items]                        
Quarterly cash distribution declared (dollars per unit) $ 0.590