XML 142 R62.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Leases (Details 1) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014
--- | ---
Minimum Future Receipts |  |
2013, Finance Leases | $ 26.3 us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableCurrent |
2014, Finance Leases | 25.2 us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInTwoYears |
2015, Finance Leases | 23.9 us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInThreeYears |
2016, Finance Leases | 22.2 us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInFourYears |
2017, Finance Leases | 11.8 us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInFiveYears |
Years thereafter, Finance Leases | 95.4 us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableDueThereafter |
Total, Finance Leases | 204.8 us-gaap_CapitalLeasesFutureMinimumPaymentsReceivable |
2013, Operating Leases | 923.4 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent | [1]
2014, Operating Leases | 740.3 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears | [1]
2015, Operating Leases | 584.1 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears | [1]
2016, Operating Leases | 464.7 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears | [1]
2017, Operating Leases | 370.0 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears | [1]
Years thereafter, Operating Leases | 770.4 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter | [1]
Total future receipts from leases | 3,852.9 us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable | [1]
2013, Total | 949.7 gmt_LeasesFutureMinimumPaymentsReceivableCurrent |
2014, Total | 765.5 gmt_LeasesFutureMinimumPaymentsReceivableInTwoYears |
2015, Total | 608.0 gmt_LeasesFutureMinimumPaymentsReceivableInThreeYears |
2016, Total | 486.9 gmt_LeasesFutureMinimumPaymentsReceivableInFourYears |
2017, Total | 381.8 gmt_LeasesFutureMinimumPaymentsReceivableInFiveYears |
Years thereafter, Total | 865.8 gmt_LeasesFutureMinimumPaymentsReceivableThereafter |
Total | $ 4,057.7 gmt_LeasesFutureMinimumPaymentsReceivable |
[1] | (1) The future contractual receipts due under our full-service operating leases include executory costs such as maintenance, car taxes, and insurance.

X
- Definition Leases future minimum payments receivable. + References No definition available. + Details
Name: | gmt_LeasesFutureMinimumPaymentsReceivable
Namespace Prefix: | gmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Leases future minimum payments receivable current. + References No definition available. + Details
Name: | gmt_LeasesFutureMinimumPaymentsReceivableCurrent
Namespace Prefix: | gmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Leases future minimum payments receivable in five years. + References No definition available. + Details
Name: | gmt_LeasesFutureMinimumPaymentsReceivableInFiveYears
Namespace Prefix: | gmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Leases future minimum payments receivable in four years. + References No definition available. + Details
Name: | gmt_LeasesFutureMinimumPaymentsReceivableInFourYears
Namespace Prefix: | gmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Leases future minimum payments receivable in three years. + References No definition available. + Details
Name: | gmt_LeasesFutureMinimumPaymentsReceivableInThreeYears
Namespace Prefix: | gmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Leases future minimum payments receivable in two years. + References No definition available. + Details
Name: | gmt_LeasesFutureMinimumPaymentsReceivableInTwoYears
Namespace Prefix: | gmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Leases future minimum payments receivable thereafter. + References No definition available. + Details
Name: | gmt_LeasesFutureMinimumPaymentsReceivableThereafter
Namespace Prefix: | gmt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | gmt_MinimumFutureReceiptsAbstract
Namespace Prefix: | gmt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of minimum lease payments to be received by the lessor for capital leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments to be received by the lessor for capital leases in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments to be received by the lessor for capital leases after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableDueThereafter
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments to be received by the lessor for capital leases in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInFiveYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments to be received by the lessor for capital leases in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInFourYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments to be received by the lessor for capital leases in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInThreeYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments to be received by the lessor for capital leases in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 + Details
Name: | us-gaap_CapitalLeasesFutureMinimumPaymentsReceivableInTwoYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Future minimum rental payments in aggregate as of the balance sheet date under operating leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Future rental payments receivable within one year of the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Future rental payments receivable within the fifth year from the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Future rental payments receivable within the fourth year from the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Future rental payments receivable within the third year from the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Future rental payments receivable within the second year from the balance sheet date under an operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant