Revenue from Contracts with Customers Revenue from Contract with Customer (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									$ 1,891,877	$ 2,213,126	$ 2,018,924
Sales and other operating revenues	$ 632,094	$ 505,049	$ 475,921	$ 296,915	$ 671,723	$ 636,107	$ 539,604	$ 379,719	1,909,979	2,227,153	2,033,947
Tobacco sales [Member] [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									1,759,769	2,089,770	1,898,303
Processing revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									76,123	85,426	78,042
Other sales and revenue [Member] [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax									55,985	37,930	42,579
Other operating revenues									$ 18,102	$ 14,027	$ 15,023