Pension and Postretirement Benefit Plans (Schedule of Obligations and Funded Status) (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Postretirement
Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year	$ 8.4	$ 9.3
Acquisitions	0.0	0.0
Service cost	0.0	0.1	$ 0.1
Interest cost	0.3	0.3	0.3
Participant contributions	0.9	0.8
Plan amendments	0.0	0.0
Net actuarial loss (gain)	(0.4)	(0.8)
Benefits paid (including lump sums)	(0.9)	(1.3)
Settlements	0.0	0.0
Contractual termination benefits	0.0	0.0
Curtailments	0.0	0.0
Foreign currency exchange rate impact	0.0	0.0
Benefit obligation, end of year	8.3	8.4	9.3
Change in Plan Assets [Roll Forward]
Fair value of plan assets, beginning of year	0.0	0.0
Acquisitions	0.0	0.0
Actual return on plan assets	0.0	0.0
Employer contributions	0.1	0.5
Participant contributions	0.8	0.8
Benefits paid (including lump sums)	(0.9)	(1.3)
Settlements	0.0	0.0
Foreign currency exchange rate impact	0.0	0.0
Fair value of plan assets, end of year	0.0	0.0	0.0
Over (under) funded status, end of year	(8.3)	(8.4)
Domestic \| Pension
Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year	179.4	170.9
Acquisitions	0.0	0.0
Service cost	11.5	13.0	12.5
Interest cost	6.5	5.9	4.9
Participant contributions	0.0	0.0
Plan amendments	0.0	1.2
Net actuarial loss (gain)	10.3	2.4
Benefits paid (including lump sums)	(13.1)	(12.9)
Settlements	(8.4)	0.0
Contractual termination benefits	1.3	0.0
Curtailments	0.0	(1.1)
Foreign currency exchange rate impact	0.0	0.0
Benefit obligation, end of year	187.5	179.4	170.9
Change in Plan Assets [Roll Forward]
Fair value of plan assets, beginning of year	139.0	139.2
Acquisitions	0.0	0.0
Actual return on plan assets	9.2	12.0
Employer contributions	8.7	0.7
Participant contributions	0.0	0.0
Benefits paid (including lump sums)	(13.1)	(12.9)
Settlements	(8.4)	0.0
Foreign currency exchange rate impact	0.0	0.0
Fair value of plan assets, end of year	135.4	139.0	139.2
Over (under) funded status, end of year	(52.1)	(40.4)
International \| Pension
Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year	721.5	0.0
Acquisitions	0.0	836.6
Service cost	0.1	0.0
Interest cost	16.9	8.0
Participant contributions	0.0	0.0
Plan amendments	7.1	0.0
Net actuarial loss (gain)	35.8	(21.0)
Benefits paid (including lump sums)	(17.0)	(44.1)
Settlements	(12.7)	0.0
Contractual termination benefits	0.0	0.0
Curtailments	0.0	0.0
Foreign currency exchange rate impact	(26.4)	(58.0)
Benefit obligation, end of year	725.3	721.5	0.0
Change in Plan Assets [Roll Forward]
Fair value of plan assets, beginning of year	841.5	0.0
Acquisitions	0.0	867.7
Actual return on plan assets	75.5	(6.7)
Employer contributions	16.2	88.9
Participant contributions	0.0	0.0
Benefits paid (including lump sums)	(17.0)	(44.1)
Settlements	(12.7)	0.0
Foreign currency exchange rate impact	(31.4)	(64.3)
Fair value of plan assets, end of year	872.1	841.5	$ 0.0
Over (under) funded status, end of year	$ 146.8	$ 120.0

Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

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Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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Amount of contributions received by defined benefit plan from participant which increase benefit obligation.

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Amount of increase in benefit obligation of defined benefit plan from business combination.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Amount of (increase) decrease in benefit obligation of defined benefit plan from event reducing expected years of future service of present employees or eliminating accrual of benefits for some or all future services of present employees.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Amount of foreign currency translation gain (loss) which (increases) decreases benefit obligation of defined benefit plan.

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Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan.

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Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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Amount of contributions received by defined benefit plan from participant which increases plan assets.

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Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of (increase) decrease to benefit obligation of defined benefit plan from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Includes, but is not limited to, lump-sum cash payment to participant in exchange for right to receive specified benefits, purchase of nonparticipating annuity contract and change from remeasurement.

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Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract.

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Amount of increase in benefit obligation for benefits provided to employees payable from defined benefit plan or payable upon retirement.

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