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Segments of Business - Segment Assets and Property, Plant and Equipment, Net by Geographical Area (Details) - USD ($) $ in Millions | Mar. 31, 2017 | Mar. 31, 2016
--- | --- | ---
Segment assets |  |
Total | $ 60,969 | $ 56,523
Property, plant and equipment, net |  |
Total | 2,292 | 2,278
United States |  |
Property, plant and equipment, net |  |
Total | 1,383 | 1,500
Foreign |  |
Property, plant and equipment, net |  |
Total | 909 | 778
Operating Segments | Distribution Solutions |  |
Segment assets |  |
Total | 52,322 | 47,088
Operating Segments | Technology Solutions |  |
Segment assets |  |
Total | 4,995 | 3,072
Corporate |  |
Segment assets |  |
Total | $ 3,652 | $ 6,363

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