Consolidating Condensed Statements of Cash Flows (Detail) (USD $) | 12 Months Ended |
In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 |
Condensed Financial Statements, Captions [Line Items] | ' | ' | ' |
Net cash provided by (used in) operating activities | $2,253 | $1,889 | $1,578 |
Investing activities | ' | ' | ' |
Property and equipment additions | -152 | -132 | -65 |
Proceeds received on asset sales | 22 | 21 | 14 |
Net assets acquired (net of cash acquired) | -537 | -69 | -841 |
Intercompany loan advances | ' | ' | 0 |
intercompany loan receipts | 0 | 0 | 0 |
Repayments of Related Party Debt | ' | ' | 0 |
Other, net | 2 | -9 | -7 |
Net cash used in investing activities exclusive of vehicle programs | -665 | -189 | -899 |
Vehicle programs: | ' | ' | ' |
Decrease in program cash | -79 | -13 | -11 |
Investment In Vehicles | -10,899 | -11,067 | -8,659 |
Proceeds received on disposition of vehicles | 9,409 | 9,196 | 7,196 |
Investment in debt securities of AESOP - related party | 0 | 0 | -400 |
Investment in debt securities of AESOP - related party | 0 | 0 | -400 |
Net Cash Used In Investing Activities Of Vehicle Programs | -1,569 | -1,884 | -1,474 |
Net cash used in investing activities | -2,234 | -2,073 | -2,373 |
Financing activities | ' | ' | ' |
Proceeds from borrowings | 2,972 | 1,152 | 682 |
Principal payments on borrowings | -2,608 | -1,501 | -668 |
Proceeds from (Repayments of) Short-term Debt | -36 | 10 | -97 |
Net intercompany transactions | 0 | 0 | 0 |
Debt financing fees | -37 | -16 | -78 |
Purchase of warrants | -78 | -29 | 0 |
Proceeds from sale of call options | 104 | 43 | 0 |
Repurchases of common stock | -48 | 0 | 0 |
Other, net | 3 | 1 | 1 |
Net cash provided by (used in) financing activities exclusive of vehicle programs | 272 | -340 | -160 |
Vehicle programs: | ' | ' | ' |
Proceeds from borrowings | 12,953 | 12,108 | 10,534 |
Principal payments on borrowings | -13,115 | -11,490 | -9,917 |
Net change in short-term borrowings | -36 | 10 | ' |
Debt financing fees | -34 | -28 | -33 |
Net cash provided by financing activities of vehicle programs | -196 | 590 | 584 |
Net cash provided by (used in) financing activities | 76 | 250 | 424 |
Effect of changes in exchange rates on cash and cash equivalents | -8 | 6 | -6 |
Net increase (decrease) in cash and cash equivalents | 87 | 72 | -377 |
Cash and cash equivalents, beginning of period | 606 | 534 | 911 |
Cash and cash equivalents, end of period | 693 | 606 | 534 |
Parent Company | ' | ' | ' |
Condensed Financial Statements, Captions [Line Items] | ' | ' | ' |
Net cash provided by (used in) operating activities | -3 | -43 | -32 |
Investing activities | ' | ' | ' |
Property and equipment additions | 0 | 0 | 0 |
Proceeds received on asset sales | 0 | 0 | 0 |
Net assets acquired (net of cash acquired) | ' | ' | 0 |
Intercompany loan advances | ' | ' | -486 |
intercompany loan receipts | ' | 224 | 242 |
Repayments of Related Party Debt | ' | ' | 0 |
Other, net | 146 | 29 | -34 |
Net cash used in investing activities exclusive of vehicle programs | 146 | 253 | -278 |
Vehicle programs: | ' | ' | ' |
Decrease in program cash | 0 | 0 | 0 |
Investment In Vehicles | 0 | 0 | 0 |
Proceeds received on disposition of vehicles | 0 | 0 | 0 |
Investment in debt securities of AESOP - related party | ' | ' | -400 |
Investment in debt securities of AESOP - related party | ' | ' | -400 |
Net Cash Used In Investing Activities Of Vehicle Programs | 0 | 0 | 0 |
Net cash used in investing activities | 146 | 253 | -278 |
Financing activities | ' | ' | ' |
Proceeds from borrowings | 0 | 0 | 0 |
Principal payments on borrowings | -115 | -222 | 0 |
Proceeds from (Repayments of) Short-term Debt | ' | ' | 0 |
Net intercompany transactions | 0 | 0 | 0 |
Debt financing fees | 0 | 0 | -38 |
Purchase of warrants | -78 | -29 | ' |
Proceeds from sale of call options | 104 | 43 | ' |
Repurchases of common stock | -48 | ' | ' |
Other, net | 3 | 1 | 93 |
Net cash provided by (used in) financing activities exclusive of vehicle programs | -134 | -207 | 55 |
Vehicle programs: | ' | ' | ' |
Proceeds from borrowings | 0 | 0 | 0 |
Principal payments on borrowings | 0 | 0 | 0 |
Net change in short-term borrowings | 0 | 0 | ' |
Debt financing fees | 0 | 0 | 0 |
Net cash provided by financing activities of vehicle programs | 0 | 0 | 0 |
Net cash provided by (used in) financing activities | -134 | -207 | 55 |
Effect of changes in exchange rates on cash and cash equivalents | 0 | 0 | 0 |
Net increase (decrease) in cash and cash equivalents | 9 | 3 | -255 |
Cash and cash equivalents, beginning of period | 5 | 2 | 257 |
Cash and cash equivalents, end of period | 14 | 5 | 2 |
Subsidiary Issuers | ' | ' | ' |
Condensed Financial Statements, Captions [Line Items] | ' | ' | ' |
Net cash provided by (used in) operating activities | 562 | 272 | -1,241 |
Investing activities | ' | ' | ' |
Property and equipment additions | -26 | -26 | -17 |
Proceeds received on asset sales | 7 | 8 | 10 |
Net assets acquired (net of cash acquired) | -564 | 0 | 0 |
Intercompany loan advances | ' | ' | 0 |
intercompany loan receipts | 233 | 0 | 0 |
Repayments of Related Party Debt | ' | ' | -242 |
Other, net | -50 | -4 | -1 |
Net cash used in investing activities exclusive of vehicle programs | -400 | -22 | -8 |
Vehicle programs: | ' | ' | ' |
Decrease in program cash | 0 | 0 | 0 |
Investment In Vehicles | -44 | -4 | -73 |
Proceeds received on disposition of vehicles | 40 | 3 | 11 |
Investment in debt securities of AESOP - related party | ' | ' | 0 |
Investment in debt securities of AESOP - related party | ' | ' | 0 |
Net Cash Used In Investing Activities Of Vehicle Programs | -4 | -1 | -62 |
Net cash used in investing activities | -404 | -23 | -70 |
Financing activities | ' | ' | ' |
Proceeds from borrowings | 2,647 | 1,152 | 682 |
Principal payments on borrowings | -2,489 | -1,268 | -4 |
Proceeds from (Repayments of) Short-term Debt | ' | ' | 0 |
Net intercompany transactions | 0 | -224 | 486 |
Debt financing fees | -30 | -16 | -40 |
Purchase of warrants | 0 | 0 | ' |
Proceeds from sale of call options | 0 | 0 | ' |
Repurchases of common stock | 0 | ' | ' |
Other, net | -146 | -25 | 152 |
Net cash provided by (used in) financing activities exclusive of vehicle programs | -18 | -381 | 1,034 |
Vehicle programs: | ' | ' | ' |
Proceeds from borrowings | 0 | 0 | 0 |
Principal payments on borrowings | 0 | 0 | 0 |
Net change in short-term borrowings | 0 | 0 | ' |
Debt financing fees | 0 | 0 | -2 |
Net cash provided by financing activities of vehicle programs | 0 | 0 | -2 |
Net cash provided by (used in) financing activities | -18 | -381 | 1,032 |
Effect of changes in exchange rates on cash and cash equivalents | 0 | 0 | 0 |
Net increase (decrease) in cash and cash equivalents | 140 | -132 | -279 |
Cash and cash equivalents, beginning of period | 102 | 234 | 513 |
Cash and cash equivalents, end of period | 242 | 102 | 234 |
Guarantor Subsidiaries | ' | ' | ' |
Condensed Financial Statements, Captions [Line Items] | ' | ' | ' |
Net cash provided by (used in) operating activities | 26 | 70 | -236 |
Investing activities | ' | ' | ' |
Property and equipment additions | -69 | -43 | -34 |
Proceeds received on asset sales | 4 | 3 | 2 |
Net assets acquired (net of cash acquired) | 8 | -1 | -1 |
Intercompany loan advances | ' | ' | 0 |
intercompany loan receipts | 60 | 0 | 0 |
Repayments of Related Party Debt | ' | ' | 0 |
Other, net | 48 | -1 | 0 |
Net cash used in investing activities exclusive of vehicle programs | 51 | -42 | -33 |
Vehicle programs: | ' | ' | ' |
Decrease in program cash | 0 | 0 | 0 |
Investment In Vehicles | -2 | -20 | -3 |
Proceeds received on disposition of vehicles | 0 | 2 | 7 |
Investment in debt securities of AESOP - related party | ' | ' | 0 |
Investment in debt securities of AESOP - related party | ' | ' | 0 |
Net Cash Used In Investing Activities Of Vehicle Programs | -2 | -18 | 4 |
Net cash used in investing activities | 49 | -60 | -29 |
Financing activities | ' | ' | ' |
Proceeds from borrowings | 0 | 0 | 0 |
Principal payments on borrowings | -3 | -11 | -4 |
Proceeds from (Repayments of) Short-term Debt | ' | ' | 0 |
Net intercompany transactions | -60 | 0 | 0 |
Debt financing fees | 0 | 0 | 0 |
Purchase of warrants | 0 | 0 | ' |
Proceeds from sale of call options | 0 | 0 | ' |
Repurchases of common stock | 0 | ' | ' |
Other, net | 0 | 0 | 268 |
Net cash provided by (used in) financing activities exclusive of vehicle programs | -63 | -11 | 264 |
Vehicle programs: | ' | ' | ' |
Proceeds from borrowings | 0 | 0 | 0 |
Principal payments on borrowings | 0 | 0 | 0 |
Net change in short-term borrowings | 0 | 0 | ' |
Debt financing fees | 0 | 0 | -1 |
Net cash provided by financing activities of vehicle programs | 0 | 0 | -1 |
Net cash provided by (used in) financing activities | -63 | -11 | 263 |
Effect of changes in exchange rates on cash and cash equivalents | 0 | 0 | 0 |
Net increase (decrease) in cash and cash equivalents | 12 | -1 | -2 |
Cash and cash equivalents, beginning of period | 0 | 1 | 3 |
Cash and cash equivalents, end of period | 12 | 0 | 1 |
Eliminations | ' | ' | ' |
Condensed Financial Statements, Captions [Line Items] | ' | ' | ' |
Net cash provided by (used in) operating activities | -68 | -60 | 426 |
Investing activities | ' | ' | ' |
Property and equipment additions | 0 | 0 | 0 |
Proceeds received on asset sales | 0 | 0 | 0 |
Net assets acquired (net of cash acquired) | 0 | 0 | 0 |
Intercompany loan advances | ' | ' | 486 |
intercompany loan receipts | -293 | -224 | -242 |
Repayments of Related Party Debt | ' | ' | 242 |
Other, net | -146 | -25 | 32 |
Net cash used in investing activities exclusive of vehicle programs | -439 | -249 | 276 |
Vehicle programs: | ' | ' | ' |
Decrease in program cash | 0 | 0 | 0 |
Investment In Vehicles | 0 | 0 | 0 |
Proceeds received on disposition of vehicles | 0 | 0 | 0 |
Investment in debt securities of AESOP - related party | ' | ' | 0 |
Investment in debt securities of AESOP - related party | ' | ' | 0 |
Net Cash Used In Investing Activities Of Vehicle Programs | 0 | 0 | 0 |
Net cash used in investing activities | -439 | -249 | 276 |
Financing activities | ' | ' | ' |
Proceeds from borrowings | 0 | 0 | 0 |
Principal payments on borrowings | 0 | 0 | 0 |
Proceeds from (Repayments of) Short-term Debt | ' | ' | 0 |
Net intercompany transactions | 293 | 224 | -486 |
Debt financing fees | 0 | 0 | 0 |
Purchase of warrants | 0 | 0 | ' |
Proceeds from sale of call options | 0 | 0 | ' |
Repurchases of common stock | 0 | ' | ' |
Other, net | 214 | 85 | -458 |
Net cash provided by (used in) financing activities exclusive of vehicle programs | 507 | 309 | -702 |
Vehicle programs: | ' | ' | ' |
Proceeds from borrowings | 0 | 0 | 0 |
Principal payments on borrowings | 0 | 0 | 0 |
Net change in short-term borrowings | 0 | 0 | ' |
Debt financing fees | 0 | 0 | 0 |
Net cash provided by financing activities of vehicle programs | 0 | 0 | 0 |
Net cash provided by (used in) financing activities | 507 | 309 | -702 |
Effect of changes in exchange rates on cash and cash equivalents | 0 | 0 | 0 |
Net increase (decrease) in cash and cash equivalents | 0 | 0 | 0 |
Cash and cash equivalents, beginning of period | 0 | 0 | 0 |
Cash and cash equivalents, end of period | 0 | 0 | 0 |
Parent [Member] | ' | ' | ' |
Investing activities | ' | ' | ' |
Net assets acquired (net of cash acquired) | 0 | 0 | ' |
intercompany loan receipts | 0 | ' | ' |
Subsidiaries Non Guarantor [Member] | ' | ' | ' |
Condensed Financial Statements, Captions [Line Items] | ' | ' | ' |
Net cash provided by (used in) operating activities | 1,736 | 1,650 | 2,661 |
Investing activities | ' | ' | ' |
Property and equipment additions | -57 | -63 | -14 |
Proceeds received on asset sales | 11 | 10 | 2 |
Net assets acquired (net of cash acquired) | 19 | -68 | -840 |
Intercompany loan advances | ' | ' | 0 |
intercompany loan receipts | 0 | 0 | 0 |
Repayments of Related Party Debt | ' | ' | 0 |
Other, net | 4 | -8 | -4 |
Net cash used in investing activities exclusive of vehicle programs | -23 | -129 | -856 |
Vehicle programs: | ' | ' | ' |
Decrease in program cash | -79 | -13 | -11 |
Investment In Vehicles | -10,853 | -11,043 | -8,583 |
Proceeds received on disposition of vehicles | 9,369 | 9,191 | 7,178 |
Investment in debt securities of AESOP - related party | ' | ' | 0 |
Investment in debt securities of AESOP - related party | ' | ' | 0 |
Net Cash Used In Investing Activities Of Vehicle Programs | -1,563 | -1,865 | -1,416 |
Net cash used in investing activities | -1,586 | -1,994 | -2,272 |
Financing activities | ' | ' | ' |
Proceeds from borrowings | 325 | 0 | 0 |
Principal payments on borrowings | -1 | 0 | -660 |
Proceeds from (Repayments of) Short-term Debt | ' | ' | -97 |
Net intercompany transactions | -233 | 0 | 0 |
Debt financing fees | -7 | 0 | 0 |
Purchase of warrants | 0 | 0 | ' |
Proceeds from sale of call options | 0 | 0 | ' |
Repurchases of common stock | 0 | ' | ' |
Other, net | -68 | -60 | -54 |
Net cash provided by (used in) financing activities exclusive of vehicle programs | -20 | -50 | -811 |
Vehicle programs: | ' | ' | ' |
Proceeds from borrowings | 12,953 | 12,108 | 10,534 |
Principal payments on borrowings | -13,115 | -11,490 | -9,917 |
Net change in short-term borrowings | -36 | 10 | ' |
Debt financing fees | -34 | -28 | -30 |
Net cash provided by financing activities of vehicle programs | -196 | 590 | 587 |
Net cash provided by (used in) financing activities | -216 | 540 | -224 |
Effect of changes in exchange rates on cash and cash equivalents | -8 | 6 | -6 |
Net increase (decrease) in cash and cash equivalents | -74 | 202 | 159 |
Cash and cash equivalents, beginning of period | 499 | 297 | 138 |
Cash and cash equivalents, end of period | $425 | $499 | $297 |