Shareholders' Equity	3 Months Ended
Dec. 31, 2018
Equity [Abstract]
Shareholders' Equity	Shareholders' Equity In July 2015, the Company's Board of Directors approved an authorization for the Company to acquire up to 7.5 million shares of its common stock. There were no shares repurchased during the first quarter of fiscal 2019. During the three months ended December 31, 2017, the Company repurchased 1,126,379 shares for $50.0, at an average price of $44.41 per share, under this authorization. Future share repurchases, if any, will be determined by the Company based on its evaluation of the market conditions, capital allocation objectives, legal and regulatory requirements and other factors. On November 12, 2018, the Board of Directors declared a dividend for the first quarter of fiscal 2019 of $0.30 per share of common stock. The dividend was paid on December 13, 2018, to all shareholders of record as of November 30, 2018. During the three months ended December 31, 2018, total dividends declared were $18.4. The payments made of $19.8 included the cumulative dividends paid upon the vesting of restricted shares during the period. During the three months ended December 31, 2017, total dividends declared were $18.7 and dividends paid were $17.6. The unpaid dividends were associated with unvested restricted shares and were recorded in other liabilities. Issuance of Common Stock - Subsequent to the end of the fiscal quarter, in January 2019, the Company issued 4,687,498 shares of common stock, which included the underwriters' exercise in full of their option to purchase 611,412 additional shares of common stock to cover over-allotments. The net proceeds from the sale of the common stock was $205.9, after deducting the underwriting discounts, and were utilized to fund a portion of the cash consideration for the Auto Care Acquisition and related fees and expenses. On January 28, 2019, in connection with the Auto Care Acquisition, the Company issued 5,278,921 shares of common stock to Spectrum as partial consideration for the purchase of the Auto Care Acquisition. The equity consideration paid to Spectrum was valued at $240.5 based on the closing stock price of $45.55 on January 28, 2019. In association with the equity consideration paid to Spectrum, the Company entered into a Shareholder Agreement with Spectrum. The Shareholder Agreement includes a 24 month standstill provision and an 18 month period as of the date of the Auto Care Acquisition closing date (Closing Date), in which Spectrum is required to vote in agreement with the Company's Board of Directors. In addition, Spectrum is unable to sell any of its shares for the first 12 months after the Closing Date. After the 12 month period has ended, Spectrum can require the Company to file a shelf registration allowing for Spectrum to sell its common shares in one or more registered offerings. However, Spectrum can not transfer common shares to any entity that would result in the entity owning more than 4.9% of the Company's outstanding common shares, after giving effect to the sale. Following the 18 month anniversary of the Closing Date, the Company will have the right to repurchase any or all of the common shares then held by Spectrum for a purchase price per share equal to the greater of the VWAP per share for the ten consecutive trading days beginning on the 12th trading day immediately preceding notice of the repurchase from the Company, and $65.12, which equals 110% of the Common Stock VWAP, as defined by the Auto Care Acquisition purchase agreement. On January 28, 2019, the Board of Directors declared a cash dividend for the second quarter of 2019 of $0.30 per share of common stock, payable on March 18, 2019, to all shareholders of record as of the close of business February 25, 2019. Issuance of Series A Mandatory Convertible Preferred Stock - Subsequent to the quarter, in January 2019, the Company issued 2,156,250 shares of Series A Mandatory Convertible Preferred Stock (MCPS), with a par value of $0.01 per share and liquidation preference of $100.00 per share, which included the underwriters' exercise in full of their option to purchase 281,250 additional shares of MCPS to cover over-allotments. The net proceeds from the sale of the MCPS was $209.1, after deducting the underwriting discounts, and were utilized to fund the Auto Care Acquisition and related fees and expenses. Each outstanding share of MCPS will convert automatically on the mandatory conversion date, which is expected to be January 15, 2022, into between 1.7892 and 2.1739 shares of common stock, subject to certain anti-dilution and other adjustments. The number of shares of common stock issuable upon conversion will be determined based on the average VWAP per share of common stock over the 20 consecutive trading day period beginning on, and including, the 21st scheduled trading day immediately prior to January 15, 2022. Dividends on the MCPS will be payable on a cumulative basis when, as and if declared, at an annual rate of 7.50% of the liquidation preference of $100.00 per share of MCPS, and may be paid in cash or, subject to certain limitations, in shares of common stock, or in any combination of cash and shares of common stock. If declared, dividends on the MCPS will be payable quarterly on January 15, April 15, July 15 and October 15 of each year, commencing on April 15, 2019 and ending on, and including, January 15, 2022. On January 28, 2019, the Board of Directors declared a cash dividend for the second quarter of 2019 of $1.8333 per share of MCPS, payable on April 15, 2019, to all shareholders of record as of the close of business April 1, 2019. No dividend or distributions may be declared or paid on shares of common stock, and no common stock shall be, directly or indirectly, purchased, redeemed, or otherwise acquired for consideration by the Company, or any of its subsidiaries, unless all accumulated and unpaid dividends for all preceding dividend periods have been declared and paid upon, or a sufficient sum of cash or number of shares of common stock has been set aside for the payment of such dividends upon, all outstanding shares of MCPS. In connection with the offering of the MCPS, the Company entered into capped call transactions with certain option counterparties. The capped call transactions are expected to reduce potential dilution to the Company’s Common Stock, subject to a cap, upon any conversion of MCPS. The Company paid $9.0 for the capped call transactions which further reduced the net proceeds received from the MCPS.

Shareholders' Equity

In July 2015, the Company's Board of Directors approved an authorization for the Company to acquire up to 7.5 million shares of its common stock. There were no shares repurchased during the first quarter of fiscal 2019. During the three months ended December 31, 2017, the Company repurchased 1,126,379 shares for $50.0, at an average price of $44.41 per share, under this authorization. Future share repurchases, if any, will be determined by the Company based on its evaluation of the market conditions, capital allocation objectives, legal and regulatory requirements and other factors.

On November 12, 2018, the Board of Directors declared a dividend for the first quarter of fiscal 2019 of $0.30 per share of common stock. The dividend was paid on December 13, 2018, to all shareholders of record as of November 30, 2018. During the three months ended December 31, 2018, total dividends declared were $18.4. The payments made of $19.8 included the cumulative dividends paid upon the vesting of restricted shares during the period. During the three months ended December 31, 2017, total dividends declared were $18.7 and dividends paid were $17.6. The unpaid dividends were associated with unvested restricted shares and were recorded in other liabilities.

Issuance of Common Stock - Subsequent to the end of the fiscal quarter, in January 2019, the Company issued 4,687,498 shares of common stock, which included the underwriters' exercise in full of their option to purchase 611,412 additional shares of common stock to cover over-allotments. The net proceeds from the sale of the common stock was $205.9, after deducting the underwriting discounts, and were utilized to fund a portion of the cash consideration for the Auto Care Acquisition and related fees and expenses.

On January 28, 2019, in connection with the Auto Care Acquisition, the Company issued 5,278,921 shares of common stock to Spectrum as partial consideration for the purchase of the Auto Care Acquisition. The equity consideration paid to Spectrum was valued at $240.5 based on the closing stock price of $45.55 on January 28, 2019.

In association with the equity consideration paid to Spectrum, the Company entered into a Shareholder Agreement with Spectrum. The Shareholder Agreement includes a 24 month standstill provision and an 18 month period as of the date of the Auto Care Acquisition closing date (Closing Date), in which Spectrum is required to vote in agreement with the Company's Board of Directors. In addition, Spectrum is unable to sell any of its shares for the first 12 months after the Closing Date. After the 12 month period has ended, Spectrum can require the Company to file a shelf registration allowing for Spectrum to sell its common shares in one or more registered offerings. However, Spectrum can not transfer common shares to any entity that would result in the entity owning more than 4.9% of the Company's outstanding common shares, after giving effect to the sale. Following the 18 month anniversary of the Closing Date, the Company will have the right to repurchase any or all of the common shares then held by Spectrum for a purchase price per share equal to the greater of the VWAP per share for the ten consecutive trading days beginning on the 12th trading day immediately preceding notice of the repurchase from the Company, and $65.12, which equals 110% of the Common Stock VWAP, as defined by the Auto Care Acquisition purchase agreement.

On January 28, 2019, the Board of Directors declared a cash dividend for the second quarter of 2019 of $0.30 per share of common stock, payable on March 18, 2019, to all shareholders of record as of the close of business February 25, 2019.

Issuance of Series A Mandatory Convertible Preferred Stock - Subsequent to the quarter, in January 2019, the Company issued 2,156,250 shares of Series A Mandatory Convertible Preferred Stock (MCPS), with a par value of $0.01 per share and liquidation preference of $100.00 per share, which included the underwriters' exercise in full of their option to purchase 281,250 additional shares of MCPS to cover over-allotments. The net proceeds from the sale of the MCPS was $209.1, after deducting the underwriting discounts, and were utilized to fund the Auto Care Acquisition and related fees and expenses.

Each outstanding share of MCPS will convert automatically on the mandatory conversion date, which is expected to be January 15, 2022, into between 1.7892 and 2.1739 shares of common stock, subject to certain anti-dilution and other adjustments. The number of shares of common stock issuable upon conversion will be determined based on the average VWAP per share of common stock over the 20 consecutive trading day period beginning on, and including, the 21st scheduled trading day immediately prior to January 15, 2022.

Dividends on the MCPS will be payable on a cumulative basis when, as and if declared, at an annual rate of 7.50% of the liquidation preference of $100.00 per share of MCPS, and may be paid in cash or, subject to certain limitations, in shares of common stock, or in any combination of cash and shares of common stock. If declared, dividends on the MCPS will be payable quarterly on January 15, April 15, July 15 and October 15 of each year, commencing on April 15, 2019 and ending on, and including, January 15, 2022.

On January 28, 2019, the Board of Directors declared a cash dividend for the second quarter of 2019 of $1.8333 per share of MCPS, payable on April 15, 2019, to all shareholders of record as of the close of business April 1, 2019.

No dividend or distributions may be declared or paid on shares of common stock, and no common stock shall be, directly or indirectly, purchased, redeemed, or otherwise acquired for consideration by the Company, or any of its subsidiaries, unless all accumulated and unpaid dividends for all preceding dividend periods have been declared and paid upon, or a sufficient sum of cash or number of shares of common stock has been set aside for the payment of such dividends upon, all outstanding shares of MCPS.

In connection with the offering of the MCPS, the Company entered into capped call transactions with certain option counterparties. The capped call transactions are expected to reduce potential dilution to the Company’s Common Stock, subject to a cap, upon any conversion of MCPS. The Company paid $9.0 for the capped call transactions which further reduced the net proceeds received from the MCPS.