Asset Impairments and Assets Held for Sale (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	$ 121.2	$ 99.4	$ 39.5
Asset Impairment Charges	48.9	2.4	0.3
Assets Held-for-sale, Long Lived, Fair Value Disclosure	40.0	3.8
Rail North America [Member]
Asset Impairment Charges	0.0	2.4	0.3
Assets Held-for-sale, Long Lived, Fair Value Disclosure	1.2	3.8
Rail International [Member]
Asset Impairment Charges	14.6	0.0	0.0
Charge for anticipated liquidation of translation adjustment	1.2
Assets Held-for-sale, Long Lived, Fair Value Disclosure	13.7
Portfolio Management [Member]
Asset Impairment Charges	34.3	$ 0.0	$ 0.0
Assets Held-for-sale, Long Lived, Fair Value Disclosure	$ 25.1