Income Taxes - Deferred Tax Assets Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Employee and retiree benefit plans	$ 23.6	$ 26.9
Capital loss and other carryforwards	11.9	16.3
Operating lease assets	25.7	24.7
Operating lease liabilities	(24.8)	(23.9)
Depreciation and amortization	(222.0)	(189.0)
Inventories	11.7	8.8
Allowances and accruals	10.3	7.3
Interest rate exchange agreement	0.0	0.7
Other	(16.6)	(16.9)
Total gross deferred tax (liabilities)	(180.2)	(145.1)
Valuation allowance	(11.9)	(16.3)
Total deferred tax (liabilities), net of valuation allowances	$ (192.1)	$ (161.4)