Changes in Operations (Details) $ in Thousands, € in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($)	Sep. 30, 2018 EUR (€)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
Proceeds from sale of business				$ 0	$ 7,927
Operating revenue	$ 583,694		$ 603,304	1,713,263	1,772,955
Operating income/(loss)	112,756		127,820	286,666	317,858
North American Operations [Member]
Operating revenue	352,442		355,709	1,026,735	1,020,896
Operating income/(loss)	95,633		102,484	249,209	255,918
North American Operations [Member] \| GEXR and SORR [Member]
Operating revenue			5,100		16,100
Operating income/(loss)			(900)		(1,300)
U.K./European Operations [Member]
Operating revenue	159,652		170,892	483,290	521,493
Operating income/(loss)	$ (2,361)		4,623	$ (6,185)	(645)
U.K./European Operations [Member] \| ERS Railways [Member]
Proceeds from Divestiture of Businesses		€ 11.2	13,100
Proceeds from sale of business		6.8	7,900
Cash Divested from Deconsolidation		€ 4.4	$ 5,200
Operating revenue					24,100
Operating income/(loss)					$ 1,600

Reduction in cash due to no longer including the former subsidiary's cash in the consolidated entity's cash.

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