Equity

Summary of Changes in Equity

A reconciliation of the beginning and ending amounts of equity is presented below:



	Six Months Ended
	September 29, 2018			September 30, 2017
	(millions)
Balance at beginning of period	$	3,457.4		$	3,299.6
Comprehensive income	270.0			266.3
Dividends declared	(101.0		)	(81.2		)
Repurchases of common stock, including shares surrendered for tax withholdings	(223.9		)	(14.6		)
Stock-based compensation	42.8			39.4
Shares issued pursuant to stock-based compensation arrangements	21.8			0.1
Cumulative adjustment from adoption of new accounting standards (see Note 4)	(5.1		)	—
Balance at end of period	$	3,462.0		$	3,509.6

Common Stock Repurchase Program

A summary of the Company's repurchases of Class A common stock under its common stock repurchase program is as follows:



	Six Months Ended
	September 29, 2018		September 30, 2017
	(millions)
Cost of shares repurchased	$	192.3	$	—
Number of shares repurchased	1.4		0.0

On June 4, 2018, the Company's Board of Directors approved an expansion of the Company's existing common stock repurchase program that allows it to repurchase up to an additional $1.000 billion of Class A Common stock. As of September 29, 2018, the remaining availability under the Company's Class A common stock repurchase program was approximately $907 million. Repurchases of shares of Class A common stock are subject to overall business and market conditions.

In addition, during the six-month periods ended September 29, 2018 and September 30, 2017, 0.3 million and 0.2 million shares of Class A common stock, respectively, at a cost of $31.6 million and $14.6 million, respectively, were surrendered to or withheld by the Company in satisfaction of withholding taxes in connection with the vesting of awards under the Company's 1997 Long-Term Stock Incentive Plan, as amended (the "1997 Incentive Plan"), and its Amended and Restated 2010 Long-Term Stock Incentive Plan (the "2010 Incentive Plan").

Repurchased and surrendered shares are accounted for as treasury stock at cost and held in treasury for future use.

Dividends

Since 2003, the Company has maintained a regular quarterly cash dividend program on its common stock. On June 4, 2018, the Company's Board of Directors approved an increase to the Company's quarterly cash dividend on its common stock from $0.50 to $0.625 per share. The second quarter Fiscal 2019 dividend of $0.625 per share was declared on September 14, 2018, was payable to stockholders of record at the close of business on September 28, 2018, and was paid on October 12, 2018. Dividends paid amounted to $91.3 million and $81.1 million during the six-month periods ended September 29, 2018 and September 30, 2017, respectively.