Leases (Lease Balances Within Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
ASSETS:
Operating lease ROU assets	$ 221.0	$ 232.6
Operating lease, right-of-use asset, statement of financial position [Extensible List]	Other Assets, Noncurrent	Other Assets, Noncurrent
LIABILITIES:
Current operating lease liabilities	$ 51.4	$ 56.8
Operating lease liabilities	180.9	192.8
Total operating lease liabilities	$ 232.3	$ 249.6
Operating lease, liability, current, statement of financial position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Operating lease, liability, noncurrent, statement of financial position [Extensible List]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent