Stockholders Equity and Noncontrolling Interests (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Increase (Decrease) In Equity
Balance at beginning of period	$ 13,500.4	$ 9,847.4
Redeemable noncontrolling interest, balance at beginning of period	9.3
Net income	943.3	743.9
Other comprehensive income (loss)	(13.3)	72.6
Acquisitions resulting in noncontrolling interest	6.9
Purchase of treasury stock	(178.0)	(180.9)
Retirement of treasury stock	0.0	0.0
Stock options exercised	96.3	53.1
Dividends declared	(307.4)	(199.6)
Stock-based compensation expense	34.2	26.6
Balance at end of period	14,082.4	$ 10,363.1
Redeemable noncontrolling interest, balance at end of period	$ 9.1
Dividends [Abstract]
Dividends declared per share (in dollars per share)	$ 0.25	$ 0.165
Redeemable Non-controlling Interests
Increase (Decrease) In Equity
Redeemable noncontrolling interest, balance at beginning of period	$ 9.3	$ 8.7
Net income, redeemable non-controlling interest		0.3
Redeemable non-controlling interest, other comprehensive income (loss)	(0.2)	0.3
Redeemable noncontrolling interest, balance at end of period	$ 9.1	$ 9.3
Common Stock
Increase (Decrease) In Equity
Balance (in shares)	1,228.9	1,212.9
Balance at beginning of period	$ 1.2	$ 1.2
Retirement of treasury stock	$ 0.0	$ 0.0
Retirement of treasury stock (in shares)	0.0	(2.7)
Stock options exercised (in shares)	3.3	2.2
Stock options exercised	$ 0.0	$ 0.0
Balance (in shares)	1,232.2	1,212.4
Balance at end of period	$ 1.2	$ 1.2
Treasury Stock
Increase (Decrease) In Equity
Balance (in shares)	(2.4)	(3.6)
Balance at beginning of period	$ (195.8)	$ (199.7)
Purchase of treasury stock	$ (178.0)	$ (180.9)
Purchase of treasury stock (in shares)	(1.3)	(2.7)
Retirement of treasury stock	$ 0.0	$ 180.9
Retirement of treasury stock (in shares)	0.0	2.7
Stock options exercised (in shares)	0.8	0.5
Stock options exercised	$ 63.8	$ 25.7
Balance at end of period	$ (310.0)	$ (174.0)
Balance (in shares)	(2.9)	(3.1)
Additional Paid-In Capital
Increase (Decrease) In Equity
Balance at beginning of period	$ 4,232.9	$ 3,601.8
Stock options exercised	80.3	43.8
Stock-based compensation expense	34.2	26.6
Balance at end of period	4,347.4	3,672.2
Retained Earnings
Increase (Decrease) In Equity
Balance at beginning of period	9,854.3	7,105.0
Net income	933.0	737.8
Retirement of treasury stock	0.0	(180.9)
Stock options exercised	(47.8)	(16.4)
Dividends declared	(307.4)	(199.6)
Balance at end of period	10,432.1	7,445.9
Accumulated Other Comprehensive Loss
Increase (Decrease) In Equity
Balance at beginning of period	(479.5)	(716.3)
Other comprehensive income (loss)	(14.4)	72.2
Balance at end of period	(493.9)	(644.1)
Non-controlling Interests
Increase (Decrease) In Equity
Balance at beginning of period	87.3	55.4
Net income	10.3	6.1
Other comprehensive income (loss)	1.1	0.4
Acquisitions resulting in noncontrolling interest	6.9
Balance at end of period	$ 105.6	$ 61.9