Background and Basis of Presentation	12 Months Ended
Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Background and Basis of Presentation	1. Background and Basis of Presentation The Company is a leading home and security products company with a portfolio of leading branded products used for residential home repair, remodeling, new construction and security applications. References to “Fortune Brands,” “the Company,” “we,” “our” and “us” refer to Fortune Brands Home & Security, Inc. and its consolidated subsidiaries as a whole, unless the context otherwise requires. Basis of Presentation The consolidated financial statements in this Annual Report on Form 10-K have been derived from the accounts of the Company and its wholly-owned subsidiaries. The Company’s consolidated financial statements are based on a fiscal year ending December 31. Certain of the Company’s subsidiaries operate on a 52 or 53 week fiscal year ending during the month of December. In the fourth quarter of 2020, our Doors & Security segment was renamed “Outdoors & Security”. The Outdoors & Security segment name change is to the name only and had no impact on the Company’s historical financial position, results of operations, cash flow or segment level results previously reported. In December 2020, we acquired 100% of the outstanding equity of Larson Manufacturing ("Larson"), the North American market leading brand of storm, screen and security doors. Larson also sells related outdoor living products including retractable screens and porch windows. The acquisition is aligned with our strategic focus on the fast-growing outdoor living space. The Company completed the acquisition for a total purchase price of approximately $715.2 million, net of cash acquired and closing date working capital adjustments. The acquisition cost is further subject to the final post-closing working capital adjustment. We financed the transaction with borrowings under our existing credit facilities. The financial results of Larson were included in the Company’s consolidated balance sheet as of December 31, 2020. Larson's net sales, operating income and cash flows from the date of acquisition to December 31, 2020 were not material to the Company. The results of operations are included in the Outdoors & Security segment.

Background and Basis of Presentation

12 Months Ended

Dec. 31, 2020

Organization Consolidation And Presentation Of Financial Statements [Abstract]

1. Background and Basis of Presentation

The Company is a leading home and security products company with a portfolio of leading branded products used for residential home repair, remodeling, new construction and security applications. References to “Fortune Brands,” “the Company,” “we,” “our” and “us” refer to Fortune Brands Home & Security, Inc. and its consolidated subsidiaries as a whole, unless the context otherwise requires.

Basis of Presentation

The consolidated financial statements in this Annual Report on Form 10-K have been derived from the accounts of the Company and its wholly-owned subsidiaries. The Company’s consolidated financial statements are based on a fiscal year ending December 31. Certain of the Company’s subsidiaries operate on a 52 or 53 week fiscal year ending during the month of December.

In the fourth quarter of 2020, our Doors & Security segment was renamed “Outdoors & Security”. The Outdoors & Security segment name change is to the name only and had no impact on the Company’s historical financial position, results of operations, cash flow or segment level results previously reported.

In December 2020, we acquired 100% of the outstanding equity of Larson Manufacturing ("Larson"), the North American market leading brand of storm, screen and security doors. Larson also sells related outdoor living products including retractable screens and porch windows. The acquisition is aligned with our strategic focus on the fast-growing outdoor living space. The Company completed the acquisition for a total purchase price of approximately $715.2 million, net of cash acquired and closing date working capital adjustments. The acquisition cost is further subject to the final post-closing working capital adjustment. We financed the transaction with borrowings under our existing credit facilities. The financial results of Larson were included in the Company’s consolidated balance sheet as of December 31, 2020. Larson's net sales, operating income and cash flows from the date of acquisition to December 31, 2020 were not material to the Company. The results of operations are included in the Outdoors & Security segment.