Description Of Business And Basis Of Presentation New Accounting Pronouncements or Change in Accounting Principle (Tables)

6 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Accounting Standard Cash Flow Reclassification [Table Text Block]

	Six months ended September 30,
(In millions):	2017		2016
Excess tax benefit from stock-based compensation	$	42	$	37
Cash paid to taxing authorities for shares withheld from employees	105		106
Increase to net cash provided by operating activities and net cash used in financing activities	$	147	$	143