Stockholders Equity and Noncontrolling Interests (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Increase (Decrease) In Equity
Balance at beginning of period	$ 10,363.1	$ 9,847.4	$ 8,733.7	$ 9,847.4	$ 8,395.8
Redeemable noncontrolling interest, balance at beginning of period		8.7		8.7
Net income, excluding portion attributable to redeemable noncontrolling interest	1,100.8		528.4	1,844.7	1,080.1
Net income	1,100.8		528.7	1,845.0	1,080.8
Other comprehensive income (loss), excluding portion attributable to redeemable noncontrolling interests	175.0		(45.8)	247.6	(116.0)
Capital contributions from noncontrolling interests			0.3		1.1
Purchase of noncontrolling interest			(0.9)		(0.9)
Distributions to shareholders of noncontrolling interests	(1.9)		(5.4)	(1.9)	(5.4)
Purchase of treasury stock	(160.1)		(190.4)	(341.0)	(344.2)
Retirement of treasury stock	0.0		0.0	0.0	0.0
Stock option exercised	282.6		116.5	335.7	234.2
Dividends declared	(201.2)		(132.4)	(400.8)	(264.5)
Stock-based compensation expense	31.3		26.6	57.9	50.4
Balance at end of period	11,589.6	10,363.1	$ 9,030.6	11,589.6	$ 9,030.6
Redeemable noncontrolling interest, balance at end of period	$ 10.1			$ 10.1
Dividends [Abstract]
Dividends declared per share (in dollars per share)	$ 0.165		$ 0.11	$ 0.33	$ 0.22
Redeemable Non-Controlling Interest [Member]
Increase (Decrease) In Equity
Redeemable noncontrolling interest, balance at beginning of period	$ 9.3	8.7	$ 30.9	$ 8.7	$ 30.7
Net income, redeemable non-controlling interest	0.0		0.3	0.3	0.7
Redeemable noncontrolling interest, other comprehensive income loss net of tax	0.8		(0.1)	1.1	(0.3)
Purchase of noncontrolling interest			(11.2)		(11.2)
Redeemable noncontrolling interest, balance at end of period	$ 10.1	$ 9.3	$ 19.9	$ 10.1	$ 19.9
Common Stock
Increase (Decrease) In Equity
Balance (in shares)	1,212.4	1,212.9	1,203.9	1,212.9	1,201.3
Balance at beginning of period	$ 1.2	$ 1.2	$ 1.2	$ 1.2	$ 1.2
Retirement of treasury stock	$ 0.0		$ 0.0	$ 0.0	$ 0.0
Retirement of treasury stock (in shares)	(2.0)		(3.1)	(4.7)	(5.9)
Stock options exercised (in shares)	11.6		4.8	13.8	10.2
Stock option exercised	$ 0.0		$ 0.0	$ 0.0	$ 0.0
Balance (in shares)	1,222.0	1,212.4	1,205.6	1,222.0	1,205.6
Balance at end of period	$ 1.2	$ 1.2	$ 1.2	$ 1.2	$ 1.2
Treasury Stock
Increase (Decrease) In Equity
Balance (in shares)	(3.1)	(3.6)	(2.6)	(3.6)	(3.5)
Balance at beginning of period	$ (174.0)	$ (199.7)	$ (103.8)	$ (199.7)	$ (142.8)
Purchase of treasury stock	$ (160.1)		$ (190.4)	$ (341.0)	$ (344.2)
Purchase of treasury stock (in shares)	(2.0)		(3.1)	(4.7)	(5.9)
Retirement of treasury stock	$ 160.1		$ 190.4	$ 341.0	$ 344.2
Retirement of treasury stock (in shares)	2.0		3.1
Retirement of treasury stock (in shares)				4.7	5.9
Stock options exercised (in shares)	1.2		0.8
Stock option exercised	$ 69.1		$ 30.0	$ 94.8	$ 69.0
Stock options exercised - treasury (in shares)				1.7	1.7
Balance at end of period	$ (104.9)	$ (174.0)	$ (73.8)	$ (104.9)	$ (73.8)
Balance (in shares)	(1.9)	(3.1)	(1.8)	(1.9)	(1.8)
Additional Paid in Capital
Increase (Decrease) In Equity
Balance at beginning of period	$ 3,672.2	$ 3,601.8	$ 3,223.5	$ 3,601.8	$ 3,100.6
Purchase of noncontrolling interest			(0.9)		(0.9)
Stock option exercised	254.2		100.0	298.0	199.1
Stock-based compensation expense	31.3		26.6	57.9	50.4
Balance at end of period	3,957.7	3,672.2	3,349.2	3,957.7	3,349.2
Retained Earnings
Increase (Decrease) In Equity
Balance at beginning of period	7,445.9	7,105.0	6,163.5	7,105.0	5,921.1
Net income, excluding portion attributable to redeemable noncontrolling interest	1,091.3		524.8	1,829.1	1,073.5
Retirement of treasury stock	(160.1)		(190.4)	(341.0)	(344.2)
Stock option exercised	(40.7)		(13.5)	(57.1)	(33.9)
Dividends declared	(201.2)		(132.4)	(400.8)	(264.5)
Balance at end of period	8,135.2	7,445.9	6,352.0	8,135.2	6,352.0
Accumulated Other Comprehensive Loss
Increase (Decrease) In Equity
Balance at beginning of period	(644.1)	(716.3)	(602.9)	(716.3)	(533.6)
Other comprehensive income (loss), excluding portion attributable to redeemable noncontrolling interests	174.2		(45.6)	246.4	(114.9)
Balance at end of period	(469.9)	(644.1)	(648.5)	(469.9)	(648.5)
Noncontrolling Interests
Increase (Decrease) In Equity
Balance at beginning of period	61.9	55.4	52.2	55.4	49.3
Net income, excluding portion attributable to redeemable noncontrolling interest	9.5		3.6	15.6	6.6
Other comprehensive income (loss), excluding portion attributable to redeemable noncontrolling interests	0.8		(0.2)	1.2	(1.1)
Capital contributions from noncontrolling interests			0.3		1.1
Purchase of noncontrolling interest			0.0		0.0
Distributions to shareholders of noncontrolling interests	(1.9)		(5.4)	(1.9)	(5.4)
Balance at end of period	$ 70.3	$ 61.9	$ 50.5	$ 70.3	$ 50.5