Stockholders Equity and Noncontrolling Interests (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Increase (Decrease) In Equity
Balance at beginning of period	$ 11,589.6	$ 9,030.6	$ 9,847.4	$ 8,395.8
Redeemable noncontrolling interest, balance at beginning of period			8.7
Net income, excluding portion attributable to redeemable noncontrolling interest	1,255.0	608.5	3,099.7	1,688.5
Net income	1,255.1	608.9	3,100.1	1,689.6
Other comprehensive income (loss)	(37.4)	130.3	210.2	14.3
Capital contributions from noncontrolling interests		0.4		1.5
Purchase of noncontrolling interest		(0.3)		(1.2)
Distributions to shareholders of noncontrolling interests	(3.6)	(3.0)	(5.5)	(8.4)
Purchase of treasury stock	(152.9)	(176.2)	(493.9)	(520.4)
Retirement of treasury stock	0.0	0.0	0.0	0.0
Stock options exercised	111.0	85.2	446.7	319.5
Dividends declared	(201.9)	(198.9)	(602.7)	(463.4)
Stock-based compensation expense	36.9	29.5	94.8	79.9
Balance at end of period	12,596.7	$ 9,506.1	12,596.7	$ 9,506.1
Redeemable noncontrolling interest, balance at end of period	$ 10.2		$ 10.2
Dividends [Abstract]
Dividends declared per share (in dollars per share)	$ 0.165	$ 0.165	$ 0.495	$ 0.385
Redeemable Non-Controlling Interest
Increase (Decrease) In Equity
Redeemable noncontrolling interest, balance at beginning of period	$ 10.1	$ 19.9	$ 8.7	$ 30.7
Net income, redeemable non-controlling interest	0.1	0.4	0.4	1.1
Redeemable noncontrolling interest, other comprehensive income loss net of tax	0.0	0.4	1.1	0.1
Purchase of noncontrolling interest		0.0		(11.2)
Redeemable noncontrolling interest, balance at end of period	$ 10.2	$ 20.7	$ 10.2	$ 20.7
Common Stock
Increase (Decrease) In Equity
Balance (in shares)	1,222.0	1,205.6	1,212.9	1,201.3
Balance at beginning of period	$ 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)	0.0	0.0	(4.7)	(5.9)
Stock options exercised (in shares)	4.4	3.9	18.2	14.1
Stock options exercised	$ 0.0	$ 0.0	$ 0.0	$ 0.0
Balance (in shares)	1,226.4	1,209.5	1,226.4	1,209.5
Balance at end of period	$ 1.2	$ 1.2	$ 1.2	$ 1.2
Treasury Stock
Increase (Decrease) In Equity
Balance (in shares)	(1.9)	(1.8)	(3.6)	(3.5)
Balance at beginning of period	$ (104.9)	$ (73.8)	$ (199.7)	$ (142.8)
Purchase of treasury stock	$ (152.9)	$ (176.2)	$ (493.9)	$ (520.4)
Purchase of treasury stock (in shares)	(1.4)	(2.7)	(6.1)	(8.6)
Retirement of treasury stock	$ 0.0	$ 0.0	$ 341.0	$ 344.2
Retirement of treasury stock (in shares)	0.0	0.0
Retirement of treasury stock (in shares)			4.7	5.9
Stock options exercised (in shares)	0.6	0.3
Stock options exercised	$ 36.9	$ 13.1	$ 131.7	$ 82.1
Stock options exercised - treasury (in shares)			2.3	2.0
Balance at end of period	$ (220.9)	$ (236.9)	$ (220.9)	$ (236.9)
Balance (in shares)	(2.7)	(4.2)	(2.7)	(4.2)
Additional Paid in Capital
Increase (Decrease) In Equity
Balance at beginning of period	$ 3,957.7	$ 3,349.2	$ 3,601.8	$ 3,100.6
Purchase of noncontrolling interest		(0.2)		(1.1)
Stock options exercised	98.1	79.1	396.1	278.2
Stock-based compensation expense	36.9	29.5	94.8	79.9
Balance at end of period	4,092.7	3,457.6	4,092.7	3,457.6
Retained Earnings
Increase (Decrease) In Equity
Balance at beginning of period	8,135.2	6,352.0	7,105.0	5,921.1
Net income, excluding portion attributable to redeemable noncontrolling interest	1,245.7	604.4	3,074.8	1,677.8
Retirement of treasury stock	0.0	0.0	(341.0)	(344.2)
Stock options exercised	(24.0)	(7.0)	(81.1)	(40.8)
Dividends declared	(201.9)	(198.9)	(602.7)	(463.4)
Balance at end of period	9,155.0	6,750.5	9,155.0	6,750.5
Accumulated Other Comprehensive Loss
Increase (Decrease) In Equity
Balance at beginning of period	(469.9)	(648.5)	(716.3)	(533.6)
Other comprehensive income (loss)	(37.8)	128.6	208.6	13.7
Balance at end of period	(507.7)	(519.9)	(507.7)	(519.9)
Noncontrolling Interests
Increase (Decrease) In Equity
Balance at beginning of period	70.3	50.5	55.4	49.3
Net income, excluding portion attributable to redeemable noncontrolling interest	9.3	4.1	24.9	10.7
Other comprehensive income (loss)	0.4	1.7	1.6	0.6
Capital contributions from noncontrolling interests		0.4		1.5
Purchase of noncontrolling interest		(0.1)		(0.1)
Distributions to shareholders of noncontrolling interests	(3.6)	(3.0)	(5.5)	(8.4)
Balance at end of period	$ 76.4	$ 53.6	$ 76.4	$ 53.6