Segments - Selected Financial Information Relating To Company's Segments (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2025		Jun. 30, 2024	Jun. 30, 2025		Jun. 30, 2024
Segment Reporting Information [Line Items]
Net Sales		$ 1,506.3		$ 1,511.2	$ 2,973.4		$ 3,014.5
Cost of sales		859.3		799.1	1,666.8		1,615.4
Gross Profit		647.0		712.1	1,306.6		1,399.1
Marketing expenses		157.1		152.4	293.7		304.4
Research and development expenses		35.8		33.0	68.6		63.1
Selling, general and administrative expenses		228.2		222.8	455.9		452.8
Income from Operations		261.7		336.9	557.0		641.9
Operating Segments
Segment Reporting Information [Line Items]
Net Sales		1,506.3		1,511.2	2,973.4		3,014.5
Cost of sales		859.3	[1]	799.1	1,666.8	[1]	1,615.4
Gross Profit		647.0		712.1	1,306.6		1,399.1
Marketing expenses		157.1		152.4	293.7		304.4
Research and development expenses	[2]	35.8		33.0	68.6		63.1
Selling, general and administrative expenses		192.4	[3]	189.8	387.3	[3]	389.7
Income from Operations		261.7		336.9	557.0		641.9
Operating Segments | Consumer Domestic
Segment Reporting Information [Line Items]
Net Sales		1,154.1		1,170.6	2,283.9		2,335.8
Cost of sales		640.4	[1]	585.9	1,237.8	[1]	1,188.1
Gross Profit		513.7		584.7	1,046.1		1,147.7
Marketing expenses		118.0		117.5	225.7		239.5
Research and development expenses	[2]	31.8		28.8	61.0		55.2
Selling, general and administrative expenses		146.5	[3]	148.6	297.2	[3]	305.6
Income from Operations		217.4		289.8	462.2		547.4
Operating Segments | Consumer International
Segment Reporting Information [Line Items]
Net Sales		277.6		263.7	539.5		518.7
Cost of sales		156.4	[1]	148.9	303.7	[1]	293.0
Gross Profit		121.2		114.8	235.8		225.7
Marketing expenses		38.3		34.4	66.3		63.8
Research and development expenses	[2]	3.2		3.3	6.2		6.2
Selling, general and administrative expenses		47.3	[3]	42.2	93.2	[3]	84.9
Income from Operations		32.4		34.9	70.1		70.8
Operating Segments | Specialty Products
Segment Reporting Information [Line Items]
Net Sales		74.6		76.9	150.0		160.0
Cost of sales		46.3	[1]	47.4	92.7	[1]	100.8
Gross Profit		28.3		29.5	57.3		59.2
Marketing expenses		0.8		0.5	1.7		1.1
Research and development expenses	[2]	0.8		0.9	1.4		1.7
Selling, general and administrative expenses		14.8	[3]	15.9	29.5	[3]	32.7
Income from Operations		11.9		12.2	24.7		23.7
Operating Segments | Consolidating Reclassification
Segment Reporting Information [Line Items]
Net Sales	[4]	0.0		0.0	0.0		0.0
Cost of sales	[4]	16.2	[1]	16.9	32.6	[1]	33.5
Gross Profit	[4]	(16.2)		(16.9)	(32.6)		(33.5)
Marketing expenses	[4]	0.0		0.0	0.0		0.0
Research and development expenses	[2],[4]	0.0		0.0	0.0		0.0
Selling, general and administrative expenses	[4]	(16.2)	[3]	(16.9)	(32.6)	[3]	(33.5)
Income from Operations	[4]	$ 0.0		$ 0.0	$ 0.0		$ 0.0

[1] In the second quarter and first six months of 2025, the results include $30.4 of non-cash charges related to impairments of fixed assets, as well as inventory reserves primarily recorded in Consumer Domestic as a result of announcing that we are exiting the Flawless, Spinbrush and Waterpik showerhead businesses.

[2] All costs for Research & Development administration, global compliance, technology support, packaging and sustainability are reported in the Consumer Domestic segment.

[3] In the second quarter and first six months of 2025, the results include $20.6 of non-cash charges related to impairments of intangible assets, primarily recorded in Consumer Domestic as a result of announcing that we are exiting the Flawless, Spinbrush and Waterpik showerhead businesses

[4] Reflects the administrative costs of the production planning and logistics functions which are elements of Cost of Sales in the Company’s Consolidated Statements of Income but are allocated to the operating segments in Selling, General and Administrative expenses to determine operating segment income before income taxes.