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Redeemable Noncontrolling Interests and Noncontrolling Interests - Schedule of Changes in Redeemable Noncontrolling Interests and Noncontrolling Interests (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Noncontrolling Interests [Roll Forward] |  |  |  |
Beginning balance |  |  | $ 178 |
Net income attributable to noncontrolling interests | $ 55 | $ 17 | 111 | $ 35
Other comprehensive income (loss) | 33 |  | 149 |
Ending balance | 219 |  | 219 |
Redeemable Noncontrolling Interests |  |  |  |
Beginning balance |  |  | 1,327 |
Other comprehensive income (loss) | 33 |  | 149 |
Ending balance | 1,423 |  | 1,423 |
Noncontrolling Interest |  |  |  |
Noncontrolling Interests [Roll Forward] |  |  |  |
Beginning balance |  |  | 178 | 84
Net income attributable to noncontrolling interests | 44 | 5 | 91 | 12
Other comprehensive income (loss) |  |  | 0 | 0
Payments to noncontrolling interests |  |  | (47) |
Exercises of Put Right |  |  | 0 |
Purchase of noncontrolling interests |  |  |  | 85
Other |  |  | (3) | (7)
Ending balance | 219 | 174 | 219 | 174
Redeemable Noncontrolling Interests |  |  |  |
Other comprehensive income (loss) |  |  | 0 | 0
Exercises of Put Right |  |  | 0 |
Purchase of noncontrolling interests |  |  |  | 85
Other |  |  | (3) | (7)
Redeemable Noncontrolling Interest |  |  |  |
Noncontrolling Interests [Roll Forward] |  |  |  |
Other comprehensive income (loss) |  |  | 149 | (65)
Payments to noncontrolling interests |  |  | 0 |
Exercises of Put Right |  |  | (53) |
Purchase of noncontrolling interests |  |  |  | 0
Other |  |  | 0 | 0
Redeemable Noncontrolling Interests |  |  |  |
Beginning balance |  |  | 1,327 | 1,406
Net income attributable to noncontrolling interests |  |  | 20 | 23
Other comprehensive income (loss) |  |  | 149 | (65)
Reclassification of recurring compensation to other accrued liabilities |  |  | (20) | (23)
Exercises of Put Right |  |  | (53) |
Purchase of noncontrolling interests |  |  |  | 0
Other |  |  | 0 | 0
Ending balance | $ 1,423 | $ 1,341 | $ 1,423 | $ 1,341

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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(22)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(24)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition As of the reporting date, the carrying amount of noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. The noncontrolling interest holder's ownership (or holders' ownership) may be in the form of common shares (regardless of class), limited partnership units (regardless of class), non-preferential membership interests, or any other form of common equity regardless of investee entity legal form. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (16)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (12)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
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