Income Taxes (Deferred Income Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Allowance for doubtful accounts	$ 19.7	$ 18.6
Inventories	81.2	95.9
Pension and postretirement benefits	222.7	250.6
Environmental and regulatory compliance	22.4	26.8
Other accruals and prepayments	223.7	345.8
Stock-based compensation expense	64.7	63.9
Tax credit and loss carryforwards	894.5	673.4
Valuation allowances	(389.6)	(324.6)
Total deferred tax asset	1,139.3	1,150.4
Deferred tax liabilities:
Property, plant and equipment	(90.0)	(63.4)
Insurance, including self-insurance	(564.0)	(696.2)
Basis difference in LYONs	(21.6)	(12.9)
Goodwill and other intangibles	(2,774.9)	(2,711.2)
Total deferred tax liability	(3,450.5)	(3,483.7)
Net deferred tax liability	$ (2,311.2)	$ (2,333.3)