XML 42 R49.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Summary of Significant Accounting Policies:Asset Retirement Obligations (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Asset Retirement Obligation Disclosure [Abstract]    
Asset Retirement Obligation $ 2.2 $ 2.1