Other Assets (Equity Method Investee) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets
Current assets	$ 4,311,747	$ 1,162,628
Total assets	32,465,187	30,320,284
Liabilities [Abstract]
Current liabilities	4,537,121	7,952,896
Total liabilities	23,704,518	17,586,457
Income Statement [Abstract]
Net (Loss) Income	(5,775,130)	1,907,600	$ 1,815,792
Affiliates
Assets
Current assets	488,329	435,152
Non-current assets	5,456,061	4,019,394
Total assets	5,944,390	4,454,546
Liabilities [Abstract]
Current liabilities	1,106,700	1,094,552
Non- current liabilities	3,771,992	2,267,936
Total liabilities	4,878,692	3,362,488
Equity attributable to:
Noncontrolling interest	0	1,784
Income Statement [Abstract]
Total revenues	619,795	2,354,744	2,255,352
Total expenses	(939,481)	(1,875,952)	(1,779,160)
Net (Loss) Income	$ (319,686)	$ 478,792	$ 476,192