| Component: (Network and Table) | |
|---|---|
| Network | 2409415 - Disclosure - Pension and Other Postretirement Benefits - Schedule of Estimated Future Benefit Payments (Details) (http://www.cartech.com/role/PensionAndOtherPostretirementBenefitsScheduleOfEstimatedFutureBenefitPaymentsDetails) |
| Table | Schedule of Defined Benefit Plans Disclosures [Table] |
| Reporting Entity [Axis] | 0000017843 (http://www.sec.gov/CIK) |
| Defined Benefit Plan Disclosure [Line Items] | Period [Axis] | |
|---|---|---|
2016-06-30 | ||
| Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] | ||
| Pension Plans | Other Postretirement Plans | |
Estimated future benefit payments | ||
2017 | ||
2018 | ||
2019 | ||
2020 | ||
2021 | ||
2022-2026 | ||