Comprehensive Earnings (Components Of Other Comprehensive Loss) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss) on marketable securities, net of tax, beginning of period	$ (1,400,000)		$ (1,200,000)
Net unrecognized losses and prior service cost related to defined benefit plans, net of tax	(262,500,000)		(262,500,000)		$ 261,700,000	$ 271,400,000
Foreign currency translation adjustment, beginning of period	(3,678,900,000)		(3,246,700,000)
Accumulated other comprehensive loss, net of tax, beginning of period	(2,975,200,000)		(2,747,400,000)
Net sales	3,738,000,000	$ 3,933,900,000	11,177,400,000	$ 11,562,500,000
Interest expense	145,600,000	141,500,000	429,800,000	432,200,000
TSA income related to divestitures	10,200,000	92,000,000.0	143,200,000	269,400,000
Change in unrecognized gain and prior service cost related to defined benefit plans	1,400,000	(4,900,000)	(10,400,000)	(10,400,000)
Income tax expense	(4,300,000)	70,600,000	21,000,000.0	237,600,000
Net unrealized gain (loss) on marketable securities, net of tax, end of period	(600,000)		(600,000)
Net unrecognized losses and prior service cost related to defined benefit plans, net of tax, end of period	(262,500,000)		(262,500,000)
Foreign currency translation adjustment, end of period	(3,168,900,000)		(3,168,900,000)
Accumulated other comprehensive loss, net of tax, end of period	(2,686,300,000)		(2,686,300,000)
Gains and Losses on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrecognized gains (losses) on derivatives, net of tax, beginning of period		10,900,000		(18,500,000)
Other comprehensive earnings (loss) before reclassifications, before tax		23,400,000		77,400,000
Income tax expense		2,200,000		12,400,000
Net unrecognized gains (losses) on derivatives, net of tax, end of period		17,500,000		17,500,000
Gains and Losses on Derivatives | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrecognized losses on derivatives in net investment hedging relationships, net of tax				48,400,000
Gains and Losses on Derivatives | Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign currency forward contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net sales	(5,900,000)	(15,800,000)	(22,500,000)	(32,500,000)
Gains and Losses on Derivatives | Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest rate swaps
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest expense	1,600,000	1,200,000	4,800,000	3,500,000
TSA income related to divestitures	3,400,000		3,400,000
Gains and Losses on Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized gain (loss) on marketable securities, net of tax, beginning of period		(1,300,000)		(2,300,000)
Other comprehensive earnings (loss) before reclassifications, before tax		(1,300,000)		(200,000)
Income tax expense		(100,000)		0
Net unrealized gain (loss) on marketable securities, net of tax, end of period		(2,500,000)		(2,500,000)
Gains and Losses on Marketable Securities | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense	300,000		200,000
Defined Benefit Plan Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrecognized losses and prior service cost related to defined benefit plans, net of tax		260,500,000		260,500,000			$ 264,500,000	$ 268,500,000
Other comprehensive earnings (loss) before reclassifications, before tax	5,200,000	(2,700,000)	800,000	7,400,000
Income tax expense		900,000		2,400,000
Net unrecognized losses and prior service cost related to defined benefit plans, net of tax, end of period		260,500,000		260,500,000
Defined Benefit Plan Items | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of prior service costs				(100,000)
Change in unrecognized gain and prior service cost related to defined benefit plans				(10,400,000)
Income tax expense	600,000		(1,500,000)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustment, beginning of period		(3,594,700,000)		(3,385,900,000)
Other comprehensive earnings (loss) before reclassifications, before tax	510,000,000.0		77,800,000
Income tax expense		0		0
Foreign currency translation adjustment, end of period		(3,945,500,000)		(3,945,500,000)
Foreign Currency Translation Adjustment | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Tax		(350,800,000)		(559,600,000)
Income tax expense	0		0
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net of tax, beginning of period		(3,005,600,000)		(2,761,200,000)
Other comprehensive earnings (loss) before reclassifications, before tax	231,200,000	(144,600,000)	82,600,000	(367,200,000)
Income tax expense		41,500,000		33,300,000
Accumulated other comprehensive loss, net of tax, end of period		(3,208,500,000)		(3,208,500,000)
AOCI Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of prior service costs	500,000		1,600,000	100,000
Other comprehensive earnings (loss), reclassification adjustment from AOCE, pension and other postretirement benefit plans, for net gain (loss), before tax	(4,300,000)		(12,800,000)	(14,900,000)
Income tax expense	(62,400,000)		(4,000,000.0)
AOCI Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign currency forward contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net sales	(5,900,000)	(15,800,000)	(22,500,000)	(32,500,000)
AOCI Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest rate swaps
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest expense	1,600,000	1,200,000	4,800,000	3,500,000
TSA income related to divestitures	3,400,000		3,400,000
Cash Flow Hedging
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrecognized losses on derivatives in net investment hedging relationships, net of tax	(38,000,000.0)	8,800,000	(600,000)
Cash Flow Hedging | Gains and Losses on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrecognized gains (losses) on derivatives, net of tax, beginning of period	20,200,000		(8,000,000.0)
Other comprehensive earnings (loss) before reclassifications, before tax	(37,100,000)		13,700,000
Income tax expense	(9,700,000)		(500,000)
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	(8,100,000)		(8,100,000)
Cash Flow Hedging | Gains and Losses on Derivatives | Foreign currency forward contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net sales	(5,900,000)		(22,500,000)
Cash Flow Hedging | Gains and Losses on Derivatives | Interest rate swaps
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest expense	1,600,000		4,800,000
TSA income related to divestitures	3,400,000		3,400,000
Net Investment Hedging
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulate Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Net Investment Hedges, Effect Net of Taxx	228,800,000		228,800,000		$ 423,200,000	$ 237,100,000
Net Investment Hedging | Gains and Losses on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrecognized gains (losses) on derivatives, net of tax, beginning of period		315,000,000.0		377,000,000.0
Other comprehensive earnings (loss) before reclassifications, before tax		186,800,000		107,800,000
Income tax expense	(53,600,000)	40,300,000	(2,200,000)	23,300,000
Net unrecognized gains (losses) on derivatives, net of tax, end of period		461,500,000		461,500,000
Mylan N.V. | Net Investment Hedging
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrecognized losses on derivatives in net investment hedging relationships, net of tax			(10,500,000)	107,800,000
Pension and other postretirement benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of prior service costs	500,000	100,000	1,600,000	100,000
Other Comprehensive Income, Gain (Loss), Defined Benefit Plan, Divestiture Of Plan [Abstract]		2,600,000		(3,000,000.0)
Recognized net actuarial gains	(4,300,000)	(4,900,000)	(12,800,000)	$ (14,900,000)
Pension and other postretirement benefits | Defined Benefit Plan Items | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of prior service costs	$ 500,000	$ 100,000	$ 1,600,000