Capitalization (Tables)

3 Months Ended

Dec. 31, 2018

Capitalization, Long-term Debt and Equity [Abstract]

Summary of Changes in Common Stock Equity

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 October 1, 2017	85,543	$	85,543	$	796,646		$	851,669		$	(30,123	)
Net Income Available for Common Stock							198,654
Dividends Declared on Common Stock ($0.415 Per Share)							(35,590		)
Other Comprehensive Loss, Net of Tax										(10,796		)
Share-Based Payment Expense (1)				3,511
Common Stock Issued Under Stock and Benefit Plans	218	218		191
Balance at December 31, 2017	85,761	85,761		800,348			1,014,733			(40,919		)
Balance at October 1, 2018	85,957	$	85,957	$	820,223		$	1,098,900		$	(67,750	)
Net Income Available for Common Stock							102,660
Dividends Declared on Common Stock ($0.425 Per Share)							(36,663		)
Cumulative Effect of Adoption of Authoritative Guidance for Financial Assets and Liabilities							7,437
Other Comprehensive Income, Net of Tax										39,060
Share-Based Payment Expense (1)				4,917
Common Stock Issued (Repurchased) Under Stock and Benefit Plans	314	314		(8,064		)
Balance at December 31, 2018	86,271	$	86,271	$	817,076		$	1,172,334		$	(28,690	)

⁽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.