Condensed Consolidated Statement of Equity Statement - USD ($) shares in Millions, $ in Millions	Total	Preferred stock	Common stock	Additional paid-in capital	Accumulated Other Comprehensive Income	Retained earnings	Treasury stock	Parent	Noncontrolling interest	2020 Share Repurchase Program	2020 Share Repurchase Program Common stock	2020 Share Repurchase Program Additional paid-in capital	2020 Share Repurchase Program Retained earnings	2020 Share Repurchase Program Treasury stock	2020 Share Repurchase Program Parent
Beginning balance, shares at Dec. 31, 2020		0.0	176.2				23.8
Beginning balance at Dec. 31, 2020	$ 10,686.1	$ 0.0	$ 0.1	$ 0.0	$ (299.0)	$ 13,976.3	$ (2,977.1)	$ 10,700.3	$ (14.2)
Net income	1,430.1					858.7		858.7	571.4
Other comprehensive income (loss), net of tax	127.8				127.2			127.2	0.6
Capital contribution from noncontrolling interest	5.1								5.1
Distribution to noncontrolling interest	(100.0)								(100.0)
Repurchase of common stock, at cost, shares										(3.8)				(3.8)
Repurchase of common stock, at cost										$ (1,050.0)				$ (1,050.0)	$ (1,050.0)
Retirement of common stock pursuant to Share Repurchase Programs, at cost, shares											(3.8)			(3.8)
Retirement of common stock pursuant to Share Repurchase Progams, at cost												$ (163.3)	$ (886.7)	$ 1,050.0
Issuance of common stock under stock option and stock purchase plans, shares			0.2
Issuance of common stock under stock option and stock purchase plans	33.4			33.4				33.4
Issuance of common stock under award plan, shares			0.3
Issuance of common stock under stock award plan	(47.6)					(47.6)		(47.6)
Compensation related to share-based payments	128.4			128.4				128.4
Other	1.5			1.5				1.5
Ending balance at Jun. 30, 2021	11,214.8	$ 0.0	$ 0.1	0.0	(171.8)	13,900.7	$ (2,977.1)	10,751.9	462.9
Ending balance, shares at Jun. 30, 2021		0.0	172.9				23.8
Beginning balance, shares at Mar. 31, 2021		0.0	174.4				23.8
Beginning balance at Mar. 31, 2021	10,663.2	$ 0.0	$ 0.1	0.0	(174.3)	13,833.5	$ (2,977.1)	10,682.2	(19.0)
Net income	1,025.5					448.5		448.5	577.0
Other comprehensive income (loss), net of tax	2.4				2.5			2.5	(0.1)
Capital contribution from noncontrolling interest	5.0								5.0
Distribution to noncontrolling interest	(100.0)								(100.0)
Repurchase of common stock, at cost, shares										(1.6)				(1.6)
Repurchase of common stock, at cost										$ (450.0)				$ (450.0)	(450.0)
Retirement of common stock pursuant to Share Repurchase Programs, at cost, shares											(1.6)			(1.6)
Retirement of common stock pursuant to Share Repurchase Progams, at cost												(69.5)	(380.5)	$ 450.0
Issuance of common stock under stock option and stock purchase plans, shares			0.1
Issuance of common stock under stock option and stock purchase plans	13.7			13.7				13.7
Issuance of common stock under award plan, shares			0.0
Issuance of common stock under stock award plan	(0.8)					(0.8)		(0.8)
Compensation related to share-based payments	55.8			55.8				55.8
Ending balance at Jun. 30, 2021	11,214.8	$ 0.0	$ 0.1	0.0	(171.8)	13,900.7	$ (2,977.1)	10,751.9	462.9
Ending balance, shares at Jun. 30, 2021		0.0	172.9				23.8
Beginning balance, shares at Dec. 31, 2021		0.0	170.8				23.8
Beginning balance at Dec. 31, 2021	10,959.7	$ 0.0	$ 0.1	68.2	(106.7)	13,911.7	$ (2,977.1)	10,896.2	63.5
Net income	1,277.2					1,361.8		1,361.8	(84.6)
Other comprehensive income (loss), net of tax	(3.7)				(3.7)			(3.7)
Capital contribution from noncontrolling interest	12.0								12.0
Repurchase of common stock, at cost, shares														(2.4)
Repurchase of common stock, at cost										$ (500.0)				$ (500.0)	(500.0)
Retirement of common stock pursuant to Share Repurchase Programs, at cost, shares										(2.4)	(2.4)			(2.4)
Retirement of common stock pursuant to Share Repurchase Progams, at cost										$ (500.0)		(186.4)	(313.6)	$ 500.0
Issuance of common stock under stock option and stock purchase plans, shares			0.2
Issuance of common stock under stock option and stock purchase plans	28.9			28.9				28.9
Issuance of common stock under award plan, shares			0.4
Issuance of common stock under stock award plan	(40.4)			(40.4)				(40.4)
Compensation related to share-based payments	128.4			128.4				128.4
Other	1.3			1.3				1.3
Ending balance at Jun. 30, 2022	11,863.4	$ 0.0	$ 0.1	0.0	(110.4)	14,959.9	$ (2,977.1)	11,872.5	(9.1)
Ending balance, shares at Jun. 30, 2022		0.0	169.0				23.8
Beginning balance, shares at Mar. 31, 2022		0.0	171.3				23.8
Beginning balance at Mar. 31, 2022	11,220.7	$ 0.0	$ 0.1	119.0	(115.2)	14,215.5	$ (2,977.1)	11,242.3	(21.6)
Net income	1,058.7					1,058.0		1,058.0	0.7
Other comprehensive income (loss), net of tax	4.8				4.8			4.8
Capital contribution from noncontrolling interest	11.8								11.8
Repurchase of common stock, at cost, shares														(2.4)
Repurchase of common stock, at cost										(500.0)				$ (500.0)	$ (500.0)
Retirement of common stock pursuant to Share Repurchase Programs, at cost, shares											(2.4)			(2.4)
Retirement of common stock pursuant to Share Repurchase Progams, at cost										$ 0.0		$ (186.4)	$ (313.6)	$ 500.0
Issuance of common stock under stock option and stock purchase plans, shares			0.1
Issuance of common stock under stock option and stock purchase plans	10.0			10.0				10.0
Issuance of common stock under award plan, shares			0.0
Issuance of common stock under stock award plan	(0.7)			(0.7)				(0.7)
Compensation related to share-based payments	58.0			58.0				58.0
Other	0.1			0.1				0.1
Ending balance at Jun. 30, 2022	$ 11,863.4	$ 0.0	$ 0.1	$ 0.0	$ (110.4)	$ 14,959.9	$ (2,977.1)	$ 11,872.5	$ (9.1)
Ending balance, shares at Jun. 30, 2022		0.0	169.0				23.8