Leases - Narrative (Details) $ in Millions	Sep. 30, 2019 USD ($)
Minimum \| ASC 842 \| Retained earnings
Leases
Cumulative effect of accounting change	$ 0

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

No definition available.

Name:	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant