Capitalization (Tables)

9 Months Ended

Jun. 30, 2020

Capitalization, Long-term Debt and Equity [Abstract]

Summary of Changes in Common Stock Equity


	Common Stock							Paid In Capital		Earnings Reinvested in the Business		Accumulated Other Comprehensive Income (Loss)
		Shares			Amount
	(Thousands, except per share amounts)
Balance at April 1, 2020	86,562		$	86,562		$	835,444	$	1,176,870	$	(18,917)
Net Income Available for Common Stock								41,250
Dividends Declared on Common Stock ($0.445 Per Share)								(40,470)

Other Comprehensive Loss, Net of Tax										(22,877)
Share-Based Payment Expense ⁽¹⁾						1,699
Common Stock Issued from Sale of Common Stock	4,370		4,370			161,488
Common Stock Issued Under Stock and Benefit Plans	12		12			426
Balance at June 30, 2020	90,944		$	90,944		$	999,057	$	1,177,650	$	(41,794)

Balance at October 1, 2019	86,315		$	86,315		$	832,264	$	1,272,601	$	(52,155)
Net Income Available for Common Stock								21,773
Dividends Declared on Common Stock ($1.315 Per Share)								(115,774)
Cumulative Effect of Adoption of Authoritative Guidance for Hedging								(950)
Other Comprehensive Income, Net of Tax										10,361
Share-Based Payment Expense ⁽¹⁾						8,403
Common Stock Issued from Sale of Common Stock	4,370		4,370			161,488
Common Stock Issued (Repurchased) Under Stock and Benefit Plans	259		259			(3,098)
Balance at June 30, 2020	90,944		$	90,944		$	999,057	$	1,177,650	$	(41,794)

Balance at April 1, 2019	86,301		$	86,301		$	821,837	$	1,236,657	$	(54,286)
Net Income Available for Common Stock								63,753
Dividends Declared on Common Stock ($0.435 Per Share)								(37,543)

Other Comprehensive Income, Net of Tax										21,620
Share-Based Payment Expense ⁽¹⁾						5,054
Common Stock Issued Under Stock and Benefit Plans	6		6			352
Balance at June 30, 2019	86,307		$	86,307		$	827,243	$	1,262,867	$	(32,666)

Balance at October 1, 2018	85,957		$	85,957		$	820,223	$	1,098,900	$	(67,750)
Net Income Available for Common Stock								257,009
Dividends Declared on Common Stock ($1.285 Per Share)								(110,885)
Cumulative Effect of Adoption of Authoritative Guidance for Financial Assets and Liabilities								7,437
Cumulative Effect of Adoption of Authoritative Guidance for Reclassification of Stranded Tax Effects								10,406
Other Comprehensive Income, Net of Tax										35,084
Share-Based Payment Expense ⁽¹⁾						15,008
Common Stock Issued (Repurchased) Under Stock and Benefit Plans	350		350			(7,988)
Balance at June 30, 2019	86,307		$	86,307		$	827,243	$	1,262,867	$	(32,666)

⁽¹⁾Paid in Capital includes compensation costs associated with performance shares and/or restricted stock awards. The expense is included within Net Income Available For Common Stock, net of tax benefits.