Employee Benefit Plans - Individually Significant Multiemployer Pension Plans (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Multiemployer Plans [Line Items]
Company Contributions	$ 44	$ 40	$ 39
Total Company Contributions	37	33	32
Contributions to other multi employer pension plans	7	7	7
Automotive Industries Pension Plan [Member]
Multiemployer Plans [Line Items]
EIN	941133245
Pension Plan Number	001
Pension Protection Act Zone Status	Red	Red
FIP/RP Status	Implemented
Expiration date of Collective-Bargaining Agreement	Various dates through 6/30/2018
Company Contributions	1	1	1
Central States, Southeast and Southwest Areas Pension Plan [Member]
Multiemployer Plans [Line Items]
EIN	366044243
Pension Plan Number	001
Pension Protection Act Zone Status	Red	Red
FIP/RP Status	Implemented
Expiration date of Collective-Bargaining Agreement	The Company believes there are no collective bargaining agreements remaining that require continuing contributions to this plan; however, this point is the subject of pending litigation with the trustees for the Central States, Southeast and Southwest Areas Pension Plan.
Company Contributions	1
Local 731 Private Scavengers and Garage Attendants Pension Trust Fund [Member]
Multiemployer Plans [Line Items]
EIN	366513567
Pension Plan Number	001
Pension Protection Act Zone Status	Yellow	Yellow
FIP/RP Status	Implemented
Expiration date of Collective-Bargaining Agreement	9/30/2018
Company Contributions	6	6	5
Suburban Teamsters of Northern Illinois Pension Plan [Member]
Multiemployer Plans [Line Items]
EIN	366155778
Pension Plan Number	001
Pension Protection Act Zone Status	Red	Red
FIP/RP Status	Implemented
Expiration date of Collective-Bargaining Agreement	Various dates through 9/30/2017
Company Contributions	3	2	2
Teamsters Employers Local 945 Pension Fund [Member]
Multiemployer Plans [Line Items]
EIN	226196388
Pension Plan Number	001
Pension Protection Act Zone Status	Red	Red
FIP/RP Status	Implemented
Expiration date of Collective-Bargaining Agreement	Various dates through 12/31/2015
Teamsters Local 301 Pension Plan [Member]
Multiemployer Plans [Line Items]
EIN	366492992
Pension Plan Number	001
Pension Protection Act Zone Status	Green	Green
FIP/RP Status	NA
Expiration date of Collective-Bargaining Agreement	9/30/2018
Company Contributions	1	1	1
Western Conference of Teamsters Pension Plan [Member]
Multiemployer Plans [Line Items]
EIN	916145047
Pension Plan Number	001
Pension Protection Act Zone Status	Green	Green
FIP/RP Status	NA
Expiration date of Collective-Bargaining Agreement	Various dates through 12/31/2019
Company Contributions	24	22	22
Western Pennsylvania Teamsters and Employers Pension Plan [Member]
Multiemployer Plans [Line Items]
EIN	256029946
Pension Plan Number	001
Pension Protection Act Zone Status	Red	Red
FIP/RP Status	Implemented
Expiration date of Collective-Bargaining Agreement	12/31/2016
Company Contributions	$ 1	$ 1	$ 1

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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

-Publisher SEC

-Name Regulation 12B

-Number 240

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Three digit plan number for a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 80

-Section 50

-Paragraph 5

-Subparagraph (b)

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Amount of contributions made to multiemployer plans by the employer. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

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-Publisher FASB

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-SubTopic 80

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Indicate the multiemployer plan's certified zone status as currently required by the Pension Protection Act of 2006 or a subsequent amendment thereof. The zone status categories are red (critical status), orange (seriously endangered), yellow (endangered), and green (none of the above). The acceptable values are "red", "orange", "yellow", "green", "other", and "NA". A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

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Description of the significant collective-bargaining arrangements within the range of expiration dates for collective-bargaining arrangements requiring contributions to a multiemployer plan as well as other information to help investors understand the significance of the collective-bargaining agreements and when they expire. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

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-Publisher FASB

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Indicate whether a funding improvement plan or rehabilitation plan has been implemented or is pending for a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. The acceptable values are "no", "pending", "implemented", "other", and "NA".

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Contributions to other multi employer plans.

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Amount of contributions made to multiemployer pension plans, excluding contributions to plans which are individually significant and group together for presentation purposes.

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