Business And Summary Of Significant Accounting Policies (Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		12 Months Ended
	Jan. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income Loss [Roll Forward]
Balance at beginning of year	$ (1,994.2)	$ (2,791.1)	$ (1,994.2)	$ (3,021.7)
Adoption of accounting standards	151.2
Increase (decrease)		(475.6)	(678.2)	1,080.2
Income tax impact		34.8	9.5	(29.1)
Other comprehensive income (loss), before reclassifications, net of income taxes		(440.8)	(668.7)	1,051.1
Increase (decrease)		172.2	30.3	(44.1)
Income tax impact		(8.6)	(7.3)	20.5
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes		163.6	23.0	(23.6)
Total other comprehensive income (loss), net of income taxes		(277.2)	(645.7)	1,027.5
Balance at end of year	(2,145.4)	(3,068.3)	(2,791.1)	(1,994.2)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income Loss [Roll Forward]
Balance at beginning of year	(1,422.1)	(2,098.1)	(1,422.1)	(2,398.2)
Adoption of accounting standards	43.8
Increase (decrease)		(178.4)	(632.2)	976.1
Income tax impact		(5.8)	0.0	0.0
Other comprehensive income (loss), before reclassifications, net of income taxes		(184.2)	(632.2)	976.1
Increase (decrease)		109.0	0.0	0.0
Income tax impact		0.0	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes		109.0	0.0	0.0
Total other comprehensive income (loss), net of income taxes		(75.2)	(632.2)	976.1
Balance at end of year	(1,465.9)	(2,173.3)	(2,098.1)	(1,422.1)
Pension and postretirement plan benefit adjustments
Accumulated Other Comprehensive Income Loss [Roll Forward]
Balance at beginning of year	(571.2)	(691.1)	(571.2)	(642.2)
Adoption of accounting standards	107.2
Increase (decrease)		(149.6)	(44.9)	62.4
Income tax impact		32.0	9.2	(13.4)
Other comprehensive income (loss), before reclassifications, net of income taxes		(117.6)	(35.7)	49.0
Increase (decrease)		35.7	30.3	28.7
Income tax impact		(8.5)	(7.3)	(6.7)
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes		27.2	23.0	22.0
Total other comprehensive income (loss), net of income taxes		(90.4)	(12.7)	71.0
Balance at end of year	(678.4)	(781.5)	(691.1)	(571.2)
Unrealized gain (loss) on available-for-sale securities
Accumulated Other Comprehensive Income Loss [Roll Forward]
Balance at beginning of year	(0.9)	(1.9)	(0.9)	18.7
Adoption of accounting standards	0.2
Increase (decrease)		1.6	(1.1)	41.7
Income tax impact		(0.4)	0.3	(15.7)
Other comprehensive income (loss), before reclassifications, net of income taxes		1.2	(0.8)	26.0
Increase (decrease)		0.0	0.0	(72.8)
Income tax impact		0.0	0.0	27.2
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes		0.0	0.0	(45.6)
Total other comprehensive income (loss), net of income taxes		1.2	(0.8)	(19.6)
Balance at end of year	(1.1)	(0.7)	(1.9)	(0.9)
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Roll Forward]
Balance at beginning of year	0.0	0.0	0.0	0.0
Adoption of accounting standards	0.0
Increase (decrease)		(149.2)	0.0	0.0
Income tax impact		9.0	0.0	0.0
Other comprehensive income (loss), before reclassifications, net of income taxes		(140.2)	0.0	0.0
Increase (decrease)		27.5	0.0	0.0
Income tax impact		(0.1)	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss), net of income taxes		27.4	0.0	0.0
Total other comprehensive income (loss), net of income taxes		(112.8)	0.0	0.0
Balance at end of year	$ 0.0	$ (112.8)	$ 0.0	$ 0.0