Public Offering and Common Stock Repurchases	12 Months Ended
Mar. 31, 2019
Equity [Abstract]
Public Offering and Common Stock Repurchases	Public Offering and Common Stock Repurchases Preferred Stock On December 7, 2016, the Company issued 8,050,000 depositary shares, each of which represents a 1/20th interest in a share of 5.75% Series A Mandatory Convertible Preferred Stock (the "Series A Preferred Stock"), for an offering price of $50 per depositary share. The Company issued an aggregate of 402,500 shares of Series A Preferred Stock in connection therewith. Unless converted earlier, each share of Series A Preferred Stock will convert automatically on the mandatory conversion date, which is November 15, 2019, into between 39.7020 and 47.6420 shares of the Company’s common stock, subject to customary anti-dilution adjustments. The number of shares of common stock issuable upon conversion will be determined based on a defined average volume weighted average price per share of the Company’s common stock preceding November 15, 2019. Holders of the Series A Preferred Stock may elect on a voluntary basis to convert their shares into common stock at the minimum exchange ratio at any time prior to the mandatory conversion date. Dividends accumulate from the issuance date. Rexnord may pay such dividends in cash or, subject to certain limitations, by delivery of shares of the Company's common stock or through any combination of cash and shares of the Company's common stock as determined by the Company in its sole discretion. Dividends are payable quarterly, commencing on February 15, 2017 and ending on November 15, 2019. Any unpaid dividends will continue to accumulate. The shares of Series A Preferred Stock have a liquidation preference of $1,000 per share, plus accrued dividends. With respect to dividend and liquidation rights, the Series A Preferred Stock ranks senior to the Company's common stock and junior to all existing and future indebtedness. The net proceeds from the offering were approximately $389.7 million. The Company used $195.0 million of the proceeds to prepay a portion of the then-outstanding term loan indebtedness under the Credit Agreement, with the remainder retained for general corporate purposes. The Company accrued $23.2 million, $23.2 million, and $7.3 million of dividends and paid $23.2 million, $23.2 million, and $4.4 million in cash related to these dividends during fiscal 2019, 2018, and 2017, respectively. As of March 31, 2019, there were no dividends in arrears on the Series A Preferred Stock. Issuer Repurchases of Equity Securities During fiscal 2015, the Company's Board of Directors approved a common stock repurchase program (the "Repurchase Program") authorizing the repurchase of up to $200.0 million of the Company's common stock from time to time on the open market or in privately negotiated transactions. The Repurchase Program does not require the Company to acquire any particular amount of common stock and does not specify the timing of purchases or the prices to be paid. No shares of common stock were repurchased in fiscal 2019, 2018 or 2017. At March 31, 2019, approximately $160.0 million of repurchase authority remained.

Public Offering and Common Stock Repurchases

Preferred Stock

On December 7, 2016, the Company issued 8,050,000 depositary shares, each of which represents a 1/20th interest in a share of 5.75% Series A Mandatory Convertible Preferred Stock (the "Series A Preferred Stock"), for an offering price of $50 per depositary share. The Company issued an aggregate of 402,500 shares of Series A Preferred Stock in connection therewith. Unless converted earlier, each share of Series A Preferred Stock will convert automatically on the mandatory conversion date, which is November 15, 2019, into between 39.7020 and 47.6420 shares of the Company’s common stock, subject to customary anti-dilution adjustments. The number of shares of common stock issuable upon conversion will be determined based on a defined average volume weighted average price per share of the Company’s common stock preceding November 15, 2019. Holders of the Series A Preferred Stock may elect on a voluntary basis to convert their shares into common stock at the minimum exchange ratio at any time prior to the mandatory conversion date.

Dividends accumulate from the issuance date. Rexnord may pay such dividends in cash or, subject to certain limitations, by delivery of shares of the Company's common stock or through any combination of cash and shares of the Company's common stock as determined by the Company in its sole discretion. Dividends are payable quarterly, commencing on February 15, 2017 and ending on November 15, 2019. Any unpaid dividends will continue to accumulate. The shares of Series A Preferred Stock have a liquidation preference of $1,000 per share, plus accrued dividends. With respect to dividend and liquidation rights, the Series A Preferred Stock ranks senior to the Company's common stock and junior to all existing and future indebtedness.

The net proceeds from the offering were approximately $389.7 million. The Company used $195.0 million of the proceeds to prepay a portion of the then-outstanding term loan indebtedness under the Credit Agreement, with the remainder retained for general corporate purposes. The Company accrued $23.2 million, $23.2 million, and $7.3 million of dividends and paid $23.2 million, $23.2 million, and $4.4 million in cash related to these dividends during fiscal 2019, 2018, and 2017, respectively. As of March 31, 2019, there were no dividends in arrears on the Series A Preferred Stock.

Issuer Repurchases of Equity Securities

During fiscal 2015, the Company's Board of Directors approved a common stock repurchase program (the "Repurchase Program") authorizing the repurchase of up to $200.0 million of the Company's common stock from time to time on the open market or in privately negotiated transactions. The Repurchase Program does not require the Company to acquire any particular amount of common stock and does not specify the timing of purchases or the prices to be paid. No shares of common stock were repurchased in fiscal 2019, 2018 or 2017. At March 31, 2019, approximately $160.0 million of repurchase authority remained.