Business Optimization Initiatives Narrative (Details) $ in Millions	3 Months Ended
	Sep. 30, 2020 USD ($)
Business Optimization Initiatives [Line Items]
Business Optimization Initiatives and Related Cost, Incurred Cost	$ 607
Employee Severance [Member]
Business Optimization Initiatives [Line Items]
Business Optimization Initiatives and Related Cost, Incurred Cost	188
PPE Impairment [Member]
Business Optimization Initiatives [Line Items]
Business Optimization Initiatives and Related Cost, Incurred Cost	195
Lease Impairment [Member]
Business Optimization Initiatives [Line Items]
Business Optimization Initiatives and Related Cost, Incurred Cost	224
Other Segment [Member]
Business Optimization Initiatives [Line Items]
Business Optimization Initiatives and Related Cost, Incurred Cost	122
IngenioRx Segment [Member]
Business Optimization Initiatives [Line Items]
Business Optimization Initiatives and Related Cost, Incurred Cost	3
Government Business Segment [Member]
Business Optimization Initiatives [Line Items]
Business Optimization Initiatives and Related Cost, Incurred Cost	183
Commercial Specialty Business Segment [Member]
Business Optimization Initiatives [Line Items]
Business Optimization Initiatives and Related Cost, Incurred Cost	$ 299