Estimated Fair Values of Major Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Fair Value, Net Asset (Liability)	$ 589.8	$ 589.8
Goodwill	8,679.7	8,679.7	$ 6,694.0
Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Total Consideration Paid for Acquisition	1,857.4
Craftsman [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Deferred Revenue	293.0	293.0
Total Consideration Paid for Acquisition		569.4
Cash [Member] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	20.0	20.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	(3.1)	(3.1)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	806.4	806.4
Accounts Receivable [Member] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	26.9	26.9
Inventories [Member] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	198.2	198.2
Inventories [Member] | Craftsman [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	15.7	15.7
Prepaid Expenses and Other Current Assets [Member] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	22.1	22.1
Property, Plant and Equipment [Member] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	118.7	118.7
Trade Names [Member] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	283.0	283.0
Customer Relationships [Member] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	548.0	548.0
Customer Relationships [Member] | Craftsman [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	433.0	433.0
Other assets | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	8.2	8.2
Accounts Payable [Member] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	(70.2)	(70.2)
Accrued Liabilities [Member] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	(37.5)	(37.5)
Deferred Tax Asset [Domain] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities	(307.9)	(307.9)
Goodwill [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	2,000.0	2,000.0
Goodwill [Member] | Newell Tools [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	1,051.0	1,051.0
Goodwill [Member] | Craftsman [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	590.6	590.6
Craftsman [Member]
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Fair Value, Net Asset (Liability)	45.2	45.2
Indefinite-Lived Trade Names	$ 406.0	$ 406.0