Revenues Disaggregated Revenue (Details)
$ in Thousands

12 Months Ended

Aug. 31, 2019

USD ($)

Disaggregation of Revenue [Table Text Block]

Reportable Segment*	ASC 606		ASC 815		Other Guidance		Total Revenues
	(Dollars in thousands)
Energy	$	6,393,075	$	726,001	$	—	$	7,119,076
Ag	6,319,304		18,268,977		131,791		24,720,072
Corporate and Other	20,262		—		41,043		61,305
Total revenues	$	12,732,641	$	18,994,978	$	172,834	$	31,900,453

Revenue from Contract with Customer, Excluding Assessed Tax

$ (31,900,453)

Accounting Standards Update 2014-09

Revenue from Contract with Customer, Excluding Assessed Tax

(12,732,641)

Accounting Standards Update 2017-12 [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

(18,994,978)

Other Guidance [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

(172,834)

Energy

Revenue from Contract with Customer, Excluding Assessed Tax

(7,119,076)

Energy | Accounting Standards Update 2014-09

Revenue from Contract with Customer, Excluding Assessed Tax

(6,393,075)

Energy | Accounting Standards Update 2017-12 [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

(726,001)

Energy | Other Guidance [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

0

Ag

Revenue from Contract with Customer, Excluding Assessed Tax

(24,720,072)

Ag | Accounting Standards Update 2014-09

Revenue from Contract with Customer, Excluding Assessed Tax

(6,319,304)

Ag | Accounting Standards Update 2017-12 [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

(18,268,977)

Ag | Other Guidance [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

(131,791)

Corporate and Other

Revenue from Contract with Customer, Excluding Assessed Tax

(61,305)

Corporate and Other | Accounting Standards Update 2014-09

Revenue from Contract with Customer, Excluding Assessed Tax

(20,262)

Corporate and Other | Accounting Standards Update 2017-12 [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

0

Corporate and Other | Other Guidance [Member]

Revenue from Contract with Customer, Excluding Assessed Tax

$ (41,043)