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

9 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Accounting Standard Cash Flow Reclassification [Table Text Block]

	Nine months ended December 31,
(In millions):	2017		2016
Excess tax benefits from stock-based compensation	$	40	$	53
Cash paid to taxing authorities for shares withheld from employees	112		112
Increase to net cash provided by operating activities and net cash used in financing activities	$	152	$	165