Debt and Financing Activities (Tables)

12 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule of long-term debt

Long-term debt consisted of the following:

	March 31,
(In millions)	2018		2017
U.S. Dollar notes(1) (2)
1.40% Notes due March 15, 2018	$	—	$	500
7.50% Notes due February 15, 2019	—		350
2.28% Notes due March 15, 2019	1,100		1,100
4.75% Notes due March 1, 2021	323		599
2.70% Notes due December 15, 2022	400		400
2.85% Notes due March 15, 2023	400		400
3.80% Notes due March 15, 2024	1,100		1,100
7.65% Debentures due March 1, 2027	167		175
3.95% Notes due February 16, 2028	600		—
6.00% Notes due March 1, 2041	282		493
4.88% Notes due March 15, 2044	411		800
Foreign currency notes (1) (3)
4.50% Euro Bonds due April 26, 2017	—		533
Floating Rate Euro Notes due February 12, 2020 (4)	337		—
0.63% Euro Notes due August 17, 2021	695		638
1.50% Euro Notes due November 17, 2025	691		635
1.63% Euro Notes due October 30, 2026	669		—
3.13% Sterling Notes due February 17, 2029	630		564
Lease and other obligations	75		75
Total debt	7,880		8,362
Less: Current portion	1,129		1,057
Total long-term debt	$	6,751	$	7,305

(1) These notes are unsecured and unsubordinated obligations of the Company.

(2) Interest on these notes is payable semiannually.

(3) Interest on these foreign bonds and notes is payable annually, except the 2020 Floating Rate Euro Notes.

(4) Interest on these notes is payable quarterly.