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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Warranty Reserve Activity | The following table identifies the activity relating to the warranty reserve liability for the years ended December 31:
In millions | 2018 |  | 2017 |  | 2016
Beginning balance at January 1 | $ | 4 |  |  | $ | 5 |  |  | $ | 6 |
Accruals for warranties issued | 5 |  |  | 6 |  |  | 8 |
Settlements (in cash or kind) | (6 | ) |  | (7 | ) |  | (9 | )
Balance at end of period | $ | 3 |  |  | $ | 4 |  |  | $ | 5 |
Committed Operating Leases Less Sublease Rentals | Future minimum operating lease payments and committed subleases under non-cancelable leases as of December 31, 2018, for the following fiscal years were:
In millions | Total Amounts |  | 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2022 and Thereafter
Operating lease obligations | $ | 73 |  |  | $ | 24 |  |  | $ | 20 |  |  | $ | 12 |  |  | $ | 11 |  |  | $ | 6 |
Sublease rentals | (10 | ) |  | (6 | ) |  | (4 | ) |  | — |  |  | — |  |  | — |
Total committed operating leases less sublease rentals | $ | 63 |  |  | $ | 18 |  |  | $ | 16 |  |  | $ | 12 |  |  | $ | 11 |  |  | $ | 6 |
The following table represents the Company’s actual rental expense and sublease rental income for the years ended December 31:
In millions | 2018 |  | 2017 |  | 2016
Rental expense | $ | 24 |  |  | $ | 24 |  |  | $ | 24 |
Sublease rental income | $ | 6 |  |  | $ | 5 |  |  | $ | 3 |

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- Definition Tabular disclosure for lessee's operating leases. Includes, but is not limited to, description of lessee's operating lease, existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 1,3) -URI http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84164451&loc=d3e36991-112694 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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