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Significant Accounting Policies and Consolidated Financial Statement Components Schedule of Allowance for uncollectible loans and fees receivable (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014
Allowance for uncollectible loans and fees receivable: |  |  |  |  |  |
Balance at beginning of period | $ (19.9) | $ (15.6) | $ (21.5) | $ (20.0) |  |
Provision for loan losses | (10.8) | (6.0) | (15.5) | (9.1) |  |
Charge offs | 8.1 | 5.7 | 15.9 | 14.1 |  |
Recoveries | (1.6) | (0.4) | (3.1) | (1.3) |  |
Balance at end of period | (24.2) | (16.3) | (24.2) | (16.3) |  |
Loans and fees receivable: |  |  |  |  |  |
Balance at end of period individually evaluated for impairment | (0.9) |  | (0.9) |  | $ (1.4) |
Balance at end of period collectively evaluated for impairment | (23.3) |  | (23.3) |  | (20.1) |
Loans and fees receivable, gross | 242.7 | 154.6 | 242.7 | 154.6 | 180.1 | $ 141.6
Loans and fees receivable individually evaluated for impairment | 1.1 |  | 1.1 |  | 1.7 |
Loans and fees receivable collectively evaluated for impairment | 241.6 |  | 241.6 |  | 178.4 |
Credit Cards [Member] |  |  |  |  |  |
Allowance for uncollectible loans and fees receivable: |  |  |  |  |  |
Balance at beginning of period | (1.3) | (1.9) | (1.2) | (2.7) |  |
Provision for loan losses | 0.4 | (0.4) | 0.6 | (0.9) |  |
Charge offs | 0.6 | 0.9 | 1.0 | 2.3 |  |
Recoveries | (0.8) | (0.1) | (1.5) | (0.2) |  |
Balance at end of period | (1.1) | (1.5) | (1.1) | (1.5) |  |
Loans and fees receivable: |  |  |  |  |  |
Balance at end of period individually evaluated for impairment | 0.0 |  | 0.0 |  | 0.0 |
Balance at end of period collectively evaluated for impairment | (1.1) |  | (1.1) |  | (1.2) |
Loans and fees receivable, gross | 5.4 |  | 5.4 |  | 5.2 |
Loans and fees receivable individually evaluated for impairment | 0.0 |  | 0.0 |  | 0.0 |
Loans and fees receivable collectively evaluated for impairment | 5.4 |  | 5.4 |  | 5.2 |
Automobile Loan [Member] |  |  |  |  |  |
Allowance for uncollectible loans and fees receivable: |  |  |  |  |  |
Balance at beginning of period | (1.8) | (1.2) | (1.7) | (1.2) |  |
Provision for loan losses | (0.8) | (0.4) | (1.4) | (0.6) |  |
Charge offs | 0.9 | 0.4 | 1.7 | 0.9 |  |
Recoveries | (0.3) | (0.1) | (0.6) | (0.4) |  |
Balance at end of period | (2.0) | (1.3) | (2.0) | (1.3) |  |
Loans and fees receivable: |  |  |  |  |  |
Balance at end of period individually evaluated for impairment | (0.2) |  | (0.2) |  | (0.1) |
Balance at end of period collectively evaluated for impairment | (1.8) |  | (1.8) |  | (1.6) |
Loans and fees receivable, gross | 78.6 |  | 78.6 |  | 76.0 |
Loans and fees receivable individually evaluated for impairment | 0.3 |  | 0.3 |  | 0.2 |
Loans and fees receivable collectively evaluated for impairment | 78.3 |  | 78.3 |  | 75.8 |
Other Unsecured Lending Products [Member] |  |  |  |  |  |
Allowance for uncollectible loans and fees receivable: |  |  |  |  |  |
Balance at beginning of period | (16.8) | (12.5) | (18.6) | (16.1) |  |
Provision for loan losses | (10.4) | (5.2) | (14.7) | (7.6) |  |
Charge offs | 6.6 | 4.4 | 13.2 | 10.9 |  |
Recoveries | (0.5) | (0.2) | (1.0) | (0.7) |  |
Balance at end of period | (21.1) | $ (13.5) | (21.1) | $ (13.5) |  |
Loans and fees receivable: |  |  |  |  |  |
Balance at end of period individually evaluated for impairment | (0.7) |  | (0.7) |  | (1.3) |
Balance at end of period collectively evaluated for impairment | (20.4) |  | (20.4) |  | (17.3) |
Loans and fees receivable, gross | 158.7 |  | 158.7 |  | 98.9 |
Loans and fees receivable individually evaluated for impairment | 0.8 |  | 0.8 |  | 1.5 |
Loans and fees receivable collectively evaluated for impairment | $ 157.9 |  | $ 157.9 |  | $ 97.4 |

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