Share-Based Compensation - Additional Information (Detail)	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation, Performance Units, vesting percentage based on Return on Invested Capital, low end of range	0.00%
Share-Based Compensation, Performance Units, vesting percentage based on Return on Invested Capital, high end of range	200.00%

Share-Based Compensation, Performance Units, vesting percentage based on Return on Invested Capital, high end of range

No definition available.

Name:	cps_ShareBasedCompensationPerformanceUnitsvestingpercentagebasedonReturnonInvestedCapitalhighendofrange
Namespace Prefix:	cps_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant