Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative effect of accounting changes	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Cumulative effect of accounting changes	Treasury Stock	Shareholders’ Equity	Noncontrolling Interests
Cumulative effect of accounting changes			$ 728.8	$ 7,016.1	$ 22.3	$ (1,228.5)	$ (22.3)	$ (4,013.9)		$ 559.8
Beginning Balance at Dec. 31, 2018			728.8	7,016.1	22.3	(1,228.5)	(22.3)	(4,013.9)		559.8
Cumulative effect of accounting changes	$ 2,987.5	$ 44.6	728.6	7,533.1	22.3	(1,348.8)	(22.3)	(4,493.4)	$ 2,464.1	523.4
Net Income	986.1			924.1						62.0
Other comprehensive income (loss)	(110.8)					(98.0)				(12.8)
Dividends to noncontrolling interests										(71.6)
Acquisition of noncontrolling interests			(19.5)							(29.4)
Increase in noncontrolling interests from business combinations										15.4
Change in temporary equity			24.5
Common stock dividends declared				(429.4)
Share-based compensation			53.5
Stock issued, share-based compensation			(58.7)					65.7
Common stock repurchased								(545.2)
Ending Balance at Sep. 30, 2019	$ 2,987.5	44.6	728.6	7,533.1		(1,348.8)		(4,493.4)	2,464.1	523.4
Dividends Declared Per Common Share	$ 1.95
Cumulative effect of accounting changes			726.2	7,384.7	0.0	(1,234.9)	0.0	(4,510.4)		549.2
Beginning Balance at Jun. 30, 2019			726.2	7,384.7	0.0	(1,234.9)	0.0	(4,510.4)		549.2
Cumulative effect of accounting changes	$ 2,987.5	44.6	728.6	7,533.1	0.0	(1,348.8)	0.0	(4,493.4)	2,464.1	523.4
Net Income	312.2			290.2						22.0
Other comprehensive income (loss)	(127.6)					(113.9)				(13.7)
Dividends to noncontrolling interests										(25.5)
Acquisition of noncontrolling interests			(21.6)							(23.0)
Increase in noncontrolling interests from business combinations										14.4
Change in temporary equity			36.6
Common stock dividends declared				(141.8)
Share-based compensation			19.2
Stock issued, share-based compensation			(31.8)					34.6
Common stock repurchased								(17.6)
Ending Balance at Sep. 30, 2019	$ 2,987.5	$ 44.6	728.6	7,533.1		(1,348.8)		(4,493.4)	2,464.1	523.4
Dividends Declared Per Common Share	$ 0.65
Common Stock, shares issued		297.2
Cumulative effect of accounting changes	$ 2,987.5	$ 44.6	728.6	7,533.1		(1,348.8)		(4,493.4)	2,464.1	523.4
Cumulative effect of accounting changes	3,373.7		760.9	7,806.3	0.0	(1,197.6)	0.0	(4,560.3)		519.8
Beginning Balance at Dec. 31, 2019	3,373.7		760.9	7,806.3	0.0	(1,197.6)	0.0	(4,560.3)		519.8
Cumulative effect of accounting changes	3,121.9	44.6	741.8	7,932.6	0.0	(1,380.6)	0.0	(4,699.6)	2,638.8	483.1
Net Income	592.3			547.3						45.0
Other comprehensive income (loss)	(200.7)					(183.0)				(17.7)
Dividends to noncontrolling interests										(57.7)
Acquisition of noncontrolling interests			10.4							(37.0)
Increase in noncontrolling interests from business combinations										30.7
Change in temporary equity			(8.1)
Common stock dividends declared				(421.0)
Share-based compensation			52.5
Stock issued, share-based compensation			(73.9)					79.8
Common stock repurchased								(219.1)
Ending Balance at Sep. 30, 2020	$ 3,121.9	44.6	741.8	7,932.6		(1,380.6)		(4,699.6)	2,638.8	483.1
Dividends Declared Per Common Share	$ 1.95
Cumulative effect of accounting changes			801.2	7,759.3	0.0	(1,456.6)	0.0	(4,735.5)		448.4
Beginning Balance at Jun. 30, 2020			801.2	7,759.3	0.0	(1,456.6)	0.0	(4,735.5)		448.4
Cumulative effect of accounting changes	$ 3,121.9	44.6	741.8	7,932.6	$ 0.0	(1,380.6)	$ 0.0	(4,699.6)	2,638.8	483.1
Net Income	334.9			313.3						21.6
Other comprehensive income (loss)	81.4					76.0				5.4
Dividends to noncontrolling interests										(22.5)
Acquisition of noncontrolling interests			0.5							(0.5)
Increase in noncontrolling interests from business combinations										30.7
Change in temporary equity			(28.7)
Common stock dividends declared				(140.0)
Share-based compensation			17.6
Stock issued, share-based compensation			(48.8)					49.8
Common stock repurchased								(13.9)
Ending Balance at Sep. 30, 2020	$ 3,121.9	$ 44.6	741.8	7,932.6		(1,380.6)		(4,699.6)	2,638.8	483.1
Dividends Declared Per Common Share	$ 0.65
Common Stock, shares issued		297.2
Cumulative effect of accounting changes	$ 3,121.9	$ 44.6	$ 741.8	$ 7,932.6		$ (1,380.6)		$ (4,699.6)	$ 2,638.8	$ 483.1