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Restructuring and Asset Impairment Charges - Summary of Details for Charges Recorded (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |
Severance and employee-related costs, net |  |  | $ 207
Exit-related costs |  |  | 5
Asset impairments and accelerated depreciation and amortization |  |  | 17
Total | $ 13 | $ 14 | 229
Cost of Sales |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total |  |  | 26
Operating Expenses |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total |  |  | 203
Operating Segments | Distribution Solutions |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance and employee-related costs, net |  |  | 147
Exit-related costs |  |  | 3
Asset impairments and accelerated depreciation and amortization |  |  | 11
Total | 13 | 19 | 161
Operating Segments | Distribution Solutions | Cost of Sales |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total |  |  | 5
Operating Segments | Distribution Solutions | Operating Expenses |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total |  |  | 156
Operating Segments | Technology Solutions |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance and employee-related costs, net |  |  | 44
Exit-related costs |  |  | 1
Asset impairments and accelerated depreciation and amortization |  |  | 6
Total | 0 | (10) | 51
Operating Segments | Technology Solutions | Cost of Sales |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total |  |  | 21
Operating Segments | Technology Solutions | Operating Expenses |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total |  |  | 30
Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Severance and employee-related costs, net |  |  | 16
Exit-related costs |  |  | 1
Asset impairments and accelerated depreciation and amortization |  |  | 0
Total | $ 0 | $ 5 | 17
Corporate | Cost of Sales |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total |  |  | 0
Corporate | Operating Expenses |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total |  |  | $ 17

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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