Description of Business	3 Months Ended
Mar. 29, 2013
Description of Business [Abstract]
Description of Business	1. Description of Business TRW Automotive Holdings Corp. (also referred to herein as the “Company”) is among the world's largest and most diversified suppliers of automotive systems, modules and components to global automotive original equipment manufacturers (“OEMs”) and related aftermarkets. The Company conducts substantially all of its operations through subsidiaries. These operations primarily encompass the design, manufacture and sale of active and passive safety related products. Active safety related products principally refer to vehicle dynamic controls (primarily braking and steering), and passive safety related products principally refer to occupant restraints (primarily airbags and seat belts) and safety electronics (electronic control units and crash and occupant weight sensors). The Company is primarily a “Tier 1” supplier (a supplier that sells to OEMs). In 2012, approximately 86% of the Company's end-customer sales were to major OEMs.

The entire disclosure for the nature of an entity's business, the major products or services it sells or provides and its principal markets, including the locations of those markets. If the entity operates in more than one business, the disclosure also indicates the relative importance of its operations in each business and the basis for the determination (for example, assets, revenues, or earnings).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6003-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 94-6

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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