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Segments of Business - Schedule Of Segment Information (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Revenues |  |  |  |  |  |  |  |  |  |  |
Total Revenues | $ 51,628 | $ 53,617 | $ 52,061 | $ 51,051 | $ 48,713 | $ 50,130 | $ 49,957 | $ 49,733 | $ 208,357 | $ 198,533 | $ 190,884
Operating profit |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | 762 | 7,109 | 3,545
Loss on Debt Extinguishment |  |  |  |  |  |  |  |  | (122) | 0 | 0
Interest Expense |  |  |  |  |  |  |  |  | (283) | (308) | (353)
Income from Continuing Operations Before Income Taxes |  |  |  |  |  |  |  |  | 239 | 6,891 | 3,250
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  | 951 | 910 | 885
Expenditures for long-lived assets |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  | 405 | 404 | 488
United States |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total Revenues |  |  |  |  |  |  |  |  | 169,943 | 164,428 | 158,255
Foreign |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total Revenues |  |  |  |  |  |  |  |  | 38,414 | 34,105 | 32,629
Operating Segments |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total Revenues |  |  |  |  |  |  |  |  | 208,357 | 198,533 | 190,884
Operating profit |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | 1,208 | 7,576 | 4,072
Operating Segments | Distribution Solutions |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total Revenues |  |  |  |  |  |  |  |  | 208,117 | 195,923 | 187,999
Operating profit |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | 1,231 | 3,361 | 3,553
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  | 831 | 735 | 669
Expenditures for long-lived assets |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  | 306 | 276 | 306
Operating Segments | Distribution Solutions | Reportable Subsegments | North America pharmaceutical distribution and services |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total Revenues |  |  |  |  |  |  |  |  | 174,186 | 164,832 | 158,469
Operating Segments | Distribution Solutions | Reportable Subsegments | International pharmaceutical distribution and services |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total Revenues |  |  |  |  |  |  |  |  | 27,320 | 24,847 | 23,497
Operating Segments | Distribution Solutions | Reportable Subsegments | Medical-Surgical distribution and services |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total Revenues |  |  |  |  |  |  |  |  | 6,611 | 6,244 | 6,033
Operating Segments | Technology Solutions |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total Revenues |  |  |  |  |  |  |  |  | 240 | 2,610 | 2,885
Operating profit |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | (23) | 4,215 | 519
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  | 9 | 65 | 107
Expenditures for long-lived assets |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  | 0 | 30 | 15
Segment Reconciling Items |  |  |  |  |  |  |  |  |  |  |
Operating profit |  |  |  |  |  |  |  |  |  |  |
Corporate Expenses, Net |  |  |  |  |  |  |  |  | (564) | (377) | (469)
Corporate |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  | 111 | 110 | 109
Expenditures for long-lived assets |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  | $ 99 | $ 98 | $ 167

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