CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Class A Stock	Class A Stock Common Stock
Beginning Balance (in shares) at Dec. 31, 2020		121.5						1.8
Beginning Balance, treasury stock (in shares) at Dec. 31, 2020						(16.4)
Beginning Balance at Dec. 31, 2020	$ 11,025.3	$ 0.1	$ 6,716.2	$ 10,893.0	$ 29.3	$ (6,613.3)		$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock for equity awards granted under long-term incentive plans (in shares)		0.5
Issuance of Common Stock for equity awards granted under long-term incentive plans	93.9		93.9
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations (in shares)		(0.1)
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations	(66.4)		(66.4)
Issuance/distribution of Common Stock for 401(k) Savings Plan	10.0		8.5			$ 1.5
Repurchases of Common Stock (in shares)						(0.7)
Repurchases of Common Stock	(323.5)					$ (323.5)
Stock-based compensation charges	135.6		135.6
Net income	1,115.2			1,115.2
Other comprehensive income (loss), net of tax	(13.1)				(13.1)
Ending Balance (in shares) at Mar. 31, 2021		121.9						1.8
Ending Balance, treasury stock (in shares) at Mar. 31, 2021						(17.1)
Ending Balance at Mar. 31, 2021	11,977.0	$ 0.1	6,887.8	12,008.2	16.2	$ (6,935.3)		$ 0.0
Beginning Balance (in shares) at Dec. 31, 2020		121.5						1.8
Beginning Balance, treasury stock (in shares) at Dec. 31, 2020						(16.4)
Beginning Balance at Dec. 31, 2020	11,025.3	$ 0.1	6,716.2	10,893.0	29.3	$ (6,613.3)		$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,846.3
Ending Balance (in shares) at Sep. 30, 2021		124.6						1.8
Ending Balance, treasury stock (in shares) at Sep. 30, 2021						(17.9)
Ending Balance at Sep. 30, 2021	17,258.0	$ 0.1	7,919.3	16,739.3	9.5	$ (7,410.2)		$ 0.0
Beginning Balance (in shares) at Mar. 31, 2021		121.9						1.8
Beginning Balance, treasury stock (in shares) at Mar. 31, 2021						(17.1)
Beginning Balance at Mar. 31, 2021	11,977.0	$ 0.1	6,887.8	12,008.2	16.2	$ (6,935.3)		$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock for equity awards granted under long-term incentive plans (in shares)		0.7
Issuance of Common Stock for equity awards granted under long-term incentive plans	216.6		216.6
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations (in shares)		(0.1)
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations	(26.1)		(26.1)
Issuance/distribution of Common Stock for 401(k) Savings Plan	14.1		11.6			$ 2.5
Repurchases of Common Stock (in shares)						(0.6)
Repurchases of Common Stock	(288.6)					$ (288.6)
Stock-based compensation charges	135.9		135.9
Net income	3,098.9			3,098.9
Other comprehensive income (loss), net of tax	(0.5)				(0.5)
Ending Balance (in shares) at Jun. 30, 2021		122.5						1.8
Ending Balance, treasury stock (in shares) at Jun. 30, 2021						(17.7)
Ending Balance at Jun. 30, 2021	15,127.3	$ 0.1	7,225.8	15,107.1	15.7	$ (7,221.4)		$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock for equity awards granted under long-term incentive plans (in shares)		2.5
Issuance of Common Stock for equity awards granted under long-term incentive plans	816.5		816.5
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations (in shares)		(0.4)
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations	(269.6)		(269.6)
Issuance/distribution of Common Stock for 401(k) Savings Plan	12.0		10.2			$ 1.8
Repurchases of Common Stock (in shares)						(0.2)
Repurchases of Common Stock	(190.6)					$ (190.6)
Stock-based compensation charges	136.4		136.4
Net income	1,632.2			1,632.2
Other comprehensive income (loss), net of tax	(6.2)				(6.2)
Ending Balance (in shares) at Sep. 30, 2021		124.6						1.8
Ending Balance, treasury stock (in shares) at Sep. 30, 2021						(17.9)
Ending Balance at Sep. 30, 2021	17,258.0	$ 0.1	7,919.3	16,739.3	9.5	$ (7,410.2)		$ 0.0
Beginning Balance (in shares) at Dec. 31, 2021		126.2					1.8	1.8
Beginning Balance, treasury stock (in shares) at Dec. 31, 2021						(19.4)
Beginning Balance at Dec. 31, 2021	18,768.8	$ 0.1	8,087.5	18,968.3	(26.2)	$ (8,260.9)		$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock for equity awards granted under long-term incentive plans (in shares)		1.6
Issuance of Common Stock for equity awards granted under long-term incentive plans	593.7		593.7
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations (in shares)		(0.2)
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations	(105.8)		(105.8)
Issuance/distribution of Common Stock for 401(k) Savings Plan	14.5		12.8			$ 1.7
Repurchases of Common Stock (in shares)						(0.5)
Repurchases of Common Stock	(352.0)					$ (352.0)
Stock-based compensation charges	165.9		165.9
Net income	973.5			973.5
Other comprehensive income (loss), net of tax	(143.9)				(143.9)
Ending Balance (in shares) at Mar. 31, 2022		127.6						1.8
Ending Balance, treasury stock (in shares) at Mar. 31, 2022						(19.9)
Ending Balance at Mar. 31, 2022	19,914.7	$ 0.1	8,754.1	19,941.8	(170.1)	$ (8,611.2)		$ 0.0
Beginning Balance (in shares) at Dec. 31, 2021		126.2					1.8	1.8
Beginning Balance, treasury stock (in shares) at Dec. 31, 2021						(19.4)
Beginning Balance at Dec. 31, 2021	18,768.8	$ 0.1	8,087.5	18,968.3	(26.2)	$ (8,260.9)		$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,141.3
Ending Balance (in shares) at Sep. 30, 2022		129.0					1.8	1.8
Ending Balance, treasury stock (in shares) at Sep. 30, 2022						(22.0)
Ending Balance at Sep. 30, 2022	21,438.8	$ 0.1	9,518.2	22,109.6	(275.1)	$ (9,914.0)		$ 0.0
Beginning Balance (in shares) at Mar. 31, 2022		127.6						1.8
Beginning Balance, treasury stock (in shares) at Mar. 31, 2022						(19.9)
Beginning Balance at Mar. 31, 2022	19,914.7	$ 0.1	8,754.1	19,941.8	(170.1)	$ (8,611.2)		$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock for equity awards granted under long-term incentive plans (in shares)		0.8
Issuance of Common Stock for equity awards granted under long-term incentive plans	228.0		228.0
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations (in shares)		(0.1)
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations	(41.9)		(41.9)
Issuance/distribution of Common Stock for 401(k) Savings Plan	16.2		14.0			$ 2.2
Repurchases of Common Stock (in shares)						(0.7)
Repurchases of Common Stock	(393.6)					$ (393.6)
Stock-based compensation charges	166.0		166.0
Net income	852.1			852.1
Other comprehensive income (loss), net of tax	(53.7)				(53.7)
Ending Balance (in shares) at Jun. 30, 2022		128.3						1.8
Ending Balance, treasury stock (in shares) at Jun. 30, 2022						(20.6)
Ending Balance at Jun. 30, 2022	20,687.8	$ 0.1	9,120.2	20,793.9	(223.8)	$ (9,002.6)		$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock for equity awards granted under long-term incentive plans (in shares)		0.9
Issuance of Common Stock for equity awards granted under long-term incentive plans	322.9		322.9
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations (in shares)		(0.2)
Common Stock tendered upon exercise of stock options and vesting of restricted stock for employee tax obligations	(108.9)		(108.9)
Issuance/distribution of Common Stock for 401(k) Savings Plan	14.5		12.9			$ 1.6
Repurchases of Common Stock (in shares)						(1.4)
Repurchases of Common Stock	(913.0)					$ (913.0)
Stock-based compensation charges	171.1		171.1
Net income	1,315.7			1,315.7
Other comprehensive income (loss), net of tax	(51.3)				(51.3)
Ending Balance (in shares) at Sep. 30, 2022		129.0					1.8	1.8
Ending Balance, treasury stock (in shares) at Sep. 30, 2022						(22.0)
Ending Balance at Sep. 30, 2022	$ 21,438.8	$ 0.1	$ 9,518.2	$ 22,109.6	$ (275.1)	$ (9,914.0)		$ 0.0