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Non-Interest Revenue and Expense Detail | 12 Months Ended
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Dec. 31, 2017
Disclosure Text Block Abstract |
Non-Interest Revenue and Expense Detail | NOTE 19 Non-interest revenue and expense detail The following is a detail of Other fee s and commissions for the years ended December 31:
(Millions) |  | 2017 |  | 2016 |  | 2015
Delinquency fees |  | $ | 888 |  | $ | 762 |  | $ | 788
Foreign currency conversion fee revenue |  |  | 851 |  |  | 809 |  |  | 852
Loyalty coalition-related fees |  |  | 453 |  |  | 410 |  |  | 379
Travel commissions and fees |  |  | 354 |  |  | 338 |  |  | 349
Service fees |  |  | 309 |  |  | 291 |  |  | 361
Other(a) |  |  | 167 |  |  | 143 |  |  | 137
| Total Other fees and commissions |  | $ | 3,022 |  | $ | 2,753 |  | $ | 2,866
Other primarily includes fees related to Membership Rewards programs. The following is a detail of Other revenues for the years ended December 31:
(Millions) |  | 2017 |  | 2016 |  | 2015
Global Network Services partner revenues |  | $ | 615 |  | $ | 654 |  | $ | 640
Other(a) |  |  | 1,117 |  |  | 1,375 |  |  | 1,393
| Total Other revenues |  | $ | 1,732 |  | $ | 2,029 |  | $ | 2,033
Other includes revenues arising from net revenue earned on cross-border Card Member spending, insurance premiums earned from Card Member travel and other insurance programs, merchant-related fees, Prepaid card and Travelers Cheque-related revenues, revenues related to the GBT JV transition services agreemen t, earnings from equity method investments (including the GBT JV) and other miscellaneous revenue and fees. The following is a detail of Other expenses for the years ended December 31:
(Millions) |  | 2017 |  | 2016 |  | 2015
Professional services |  | $ | 2,070 |  | $ | 2,583 |  | $ | 2,750
Occupancy and equipment |  |  | 2,019 |  |  | 1,838 |  |  | 1,854
Communications |  |  | 276 |  |  | 302 |  |  | 345
Gain on sale of HFS portfolios(a) |  |  | ― |  |  | (1,218) |  |  | ―
Other(b) |  |  | 1,411 |  |  | 1,657 |  |  | 1,844
| Total Other expenses |  | $ | 5,776 |  | $ | 5,162 |  | $ | 6,793
Refer to Note 2 for additional information. Other expense primarily inclu des general operating expenses, goodwill and technology impairment costs (refer to Note 2), Card and merchant-related fraud losses, foreign cu rrency-related gains and losses (including the favorable impact from the reassessment of the functional currency of certain UK legal entities in the year ended December 31, 2015) and insurance costs. In addition, b eginning December 1, 2015 through to the po rtfolio sale completion dates, i nclude d the valuation allowance adjustment associated with the HFS portfolios.

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -URI http://asc.fasb.org/topic&trid=2122503 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 610 -URI http://asc.fasb.org/topic&trid=49130413 + Details
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