Risks and Uncertainties (Notes)	6 Months Ended
	Jun. 30, 2021
Risks and Uncertainties [Abstract]
Unusual Risks and Uncertainties [Table Text Block]	RISKS AND UNCERTAINTIESCOVID-19 Pandemic — The COVID-19 pandemic has severely impacted global economic activity, including electricity and energy consumption, and caused significant volatility and negative pressure in financial markets. The magnitude and duration of the COVID-19 pandemic is unknown at this time and may have material and adverse effects on our results of operations, financial condition, and cash flows in future periods.