|**Restructuring Activities (Tables)**                                                                                                                                                                                          | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|**Restructuring and Related Activities [Abstract]**                                                                                                                                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Restructuring and Related Costs                                                                                                                                                                                                | Restructuring activities as of December 31, 2023 were as follows (in millions):Acquisition-Related Intangibles Impairments and Other Charges(a)Workforce(a)Office Space Reductions(b)TotalCharges to operations$68$43$44$155Charges settled in cash—(10)—(10)Non-cash items(66)—(44)(110)Liability as of March 31, 2023$2$33$—$35Charges to operations—3—3Charges settled in cash(2)(35)—(37)Liability as of December 31, 2023$—$1$—$1(a) Charges are recorded within Restructuring in the Condensed Consolidated Statement of Operations.(b) Charges are recorded within General and administrative expenses in the Condensed Consolidated Statement of Operations.
|                                                                                                                                                                                                                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                                                                                                                                                                               | Acquisition-Related Intangibles Impairments and Other Charges(a)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Charges to operations                                                                                                                                                                                                          | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Charges settled in cash                                                                                                                                                                                                        | —                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Non-cash items                                                                                                                                                                                                                 | (66)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Liability as of March 31, 2023                                                                                                                                                                                                 | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Charges to operations                                                                                                                                                                                                          | —                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Charges settled in cash                                                                                                                                                                                                        | (2)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|                                                                                                                                                                                                                               |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Liability as of December 31, 2023                                                                                                                                                                                              | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|(a) Charges are recorded within Restructuring in the Condensed Consolidated Statement of Operations.(b) Charges are recorded within General and administrative expenses in the Condensed Consolidated Statement of Operations.

X- ReferencesNo definition available.
+ Details**Name:**
us-gaap_RestructuringAndRelatedActivitiesAbstract**Namespace Prefix:**
us-gaap_**Data Type:**
xbrli:stringItemType**Balance Type:**
na**Period Type:**
duration X- DefinitionTabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets.
+ ReferencesReference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-1Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2
+ Details**Name:**
us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock**Namespace Prefix:**
us-gaap_**Data Type:**
dtr-types:textBlockItemType**Balance Type:**
na**Period Type:**
duration