Stockholders' Equity (Table Text Block)

12 Months Ended

Mar. 31, 2017

Stockholders' Equity Note [Abstract]

Common Stock Dividends

Common Stock Dividends
Declared Date		Per Share Amount	Record Date	Dividend Date
February 8, 2017	$	1.00	February 23, 2017	March 9, 2017
October 5, 2016		1.00	October 20, 2016	November 3, 2016
March 15, 2016		1.00	April 5, 2016	April 21, 2016
August 28, 2015		3.00	September 16, 2015	October 2, 2015
June 4, 2015		1.00	June 19, 2015	July 1, 2015
February 4, 2015		1.00	March 6, 2015	March 17, 2015