Income Taxes (Deferred Tax Assets (Liabilities) Resulting From Temporary Differences) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Tax loss and deduction carryforwards	$ 2,033.0	$ 899.9
Tax credit carryforwards	874.0	746.1
Accrued expenses and reserves	219.4	183.4
Capitalized expenses	124.5	171.0
Pension and postretirement benefits	44.3	129.2
All other	355.8	234.9
Valuation allowance	(3,296.0)	(2,090.1)
Total deferred tax assets	355.0	274.4
Deferred tax liabilities:
Unremitted foreign earnings	(87.0)
Total deferred tax liabilities	(215.1)	(123.8)
Net deferred tax assets	$ 139.9	$ 150.6