Contractual Commitments, Contingencies and Off-Balance Sheet Arrangements - Additional Information (Details)	1 Months Ended			6 Months Ended
	May 31, 2021 USD ($)	Dec. 31, 2019 term	Mar. 31, 2015	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2020 USD ($)
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Potential maximum loss exposure				$ 33,500,000
Future capital commitment				1,500,000
Itiviti | Treasury Lock
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Derivative notional amount					$ 1,000,000,000
Pre-tax loss	$ 11,000,000
Derivative term	10 years
Cash flow hedge gain (loss) to be reclassified within twelve months				1,100,000
IT Services Agreement
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
IT service agreement extension term			2 years
Number of renewal terms option one | term		1
Renewal term option one (in months)		12 months
Remaining commitment amount				169,700,000
IBM Private Cloud Agreement
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Agreement term		10 years 3 months
Remaining commitment amount				191,000,000
Assets held-for-sale						$ 18,000,000
EU IT Services Agreement
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Number of renewal terms option one | term		1
Renewal term option one (in months)		12 months
Remaining commitment amount				30,500,000
Number of renewal terms option two | term		1
Renewal term option two (in months)		24 months
AWS Cloud Agreement
Contractual Commitments Contingencies And Off- Balance Sheet Arrangements [Line Items]
Remaining commitment amount				$ 250,000,000