New accounting pronouncements (Policies)	9 Months Ended
Sep. 30, 2020
Accounting Changes And Error Corrections [Abstract]
New accounting pronouncements	We adopted Accounting Standards Codification (“ASC”) 326 “Financial Instruments-Credit Losses” on January 1, 2020. ASC 326 provides for the measurement of expected credit losses on financial assets that are carried at amortized cost based on the net amounts expected to be collected. Measurements of expected credit losses therefore include provisions for non-collection, whether the risk is probable or remote. Prior to the adoption of ASC 326, credit losses were measured when non-collection was considered probable based on the prevailing facts and circumstances. We elected to not measure an allowance for expected credit losses on accrued interest and instead reverse uncollectible accrued interest through interest income on a timely basis. Upon adoption of ASC 326, we recorded a charge to retained earnings of $388 million representing the cumulative after-tax increase in our allowances for credit losses, which was primarily related to our manufactured housing loans. Expected credit losses for such financial assets are based on the net present value of future principal payments less estimated expenses related to the charge-off and foreclosure of expected uncollectible loans and include provisions for loans that are not in foreclosure. Our principal credit quality indicator is whether the loans are performing. Expected credit loss estimates consider historical default rates, collateral recovery rates, historical runoff rates, interest rates, reductions of future cash flows for modified loans, the historical time elapsed from last payment until foreclosure, among other matters. In addition, our estimates consider current conditions and reasonable and supportable forecasts. Notes to Consolidated Financial Statements (Continued) Note 2. New accounting pronouncements (Continued) Trade receivables, insurance premium receivables and other receivables are primarily short-term in duration with stated collection terms of less than one year from the date of origination. In establishing credit loss allowances for such receivables, we primarily utilize credit loss history. However, credit loss allowances may be adjusted as a result of current conditions and when we expect reasonable and supportable forecasts to deviate from historical experience. In evaluating expected credit losses of reinsurance recoverables, we review the credit quality of the counterparty and consider credit ratings, right-of-offset provisions within reinsurance contracts and other forms of credit enhancement including, collateral, funds held arrangements, guarantees, as well as other publicly available information. We adopted ASU 2017-04 “Simplifying the Test for Goodwill Impairment” as of January 1, 2020. Under ASU 2017-04, the measurement of a goodwill impairment is represented by the excess of the carrying value over the fair value of the reporting unit and is limited to the carrying value of goodwill. In August 2018, the FASB issued ASU 2018-12 “Targeted Improvements to the Accounting for Long-Duration Contracts.” ASU 2018-12 requires periodic reassessment of actuarial and discount rate assumptions used to value policyholder liabilities and deferred acquisition costs arising from long-duration insurance and reinsurance contracts, with the effects of changes in cash flow assumptions reflected in earnings and the effects of changes in discount rate assumptions reflected in other comprehensive income. Currently, the actuarial and discount rate assumptions are set at the contract inception date and not subsequently changed, except under limited circumstances. ASU 2018-12 requires new disclosures and is effective for fiscal years beginning after December 15, 2021, with early adoption permitted. We are evaluating the effect this standard will have on our Consolidated Financial Statements.

New accounting pronouncements (Policies)

9 Months Ended

Sep. 30, 2020

Accounting Changes And Error Corrections [Abstract]

We adopted Accounting Standards Codification (“ASC”) 326 “Financial Instruments-Credit Losses” on January 1, 2020. ASC 326 provides for the measurement of expected credit losses on financial assets that are carried at amortized cost based on the net amounts expected to be collected. Measurements of expected credit losses therefore include provisions for non-collection, whether the risk is probable or remote. Prior to the adoption of ASC 326, credit losses were measured when non-collection was considered probable based on the prevailing facts and circumstances. We elected to not measure an allowance for expected credit losses on accrued interest and instead reverse uncollectible accrued interest through interest income on a timely basis.

Upon adoption of ASC 326, we recorded a charge to retained earnings of $388 million representing the cumulative after-tax increase in our allowances for credit losses, which was primarily related to our manufactured housing loans. Expected credit losses for such financial assets are based on the net present value of future principal payments less estimated expenses related to the charge-off and foreclosure of expected uncollectible loans and include provisions for loans that are not in foreclosure. Our principal credit quality indicator is whether the loans are performing. Expected credit loss estimates consider historical default rates, collateral recovery rates, historical runoff rates, interest rates, reductions of future cash flows for modified loans, the historical time elapsed from last payment until foreclosure, among other matters. In addition, our estimates consider current conditions and reasonable and supportable forecasts.

Notes to Consolidated Financial Statements (Continued)

Note 2. New accounting pronouncements (Continued)

Trade receivables, insurance premium receivables and other receivables are primarily short-term in duration with stated collection terms of less than one year from the date of origination. In establishing credit loss allowances for such receivables, we primarily utilize credit loss history. However, credit loss allowances may be adjusted as a result of current conditions and when we expect reasonable and supportable forecasts to deviate from historical experience. In evaluating expected credit losses of reinsurance recoverables, we review the credit quality of the counterparty and consider credit ratings, right-of-offset provisions within reinsurance contracts and other forms of credit enhancement including, collateral, funds held arrangements, guarantees, as well as other publicly available information.

We adopted ASU 2017-04 “Simplifying the Test for Goodwill Impairment” as of January 1, 2020. Under ASU 2017-04, the measurement of a goodwill impairment is represented by the excess of the carrying value over the fair value of the reporting unit and is limited to the carrying value of goodwill.

In August 2018, the FASB issued ASU 2018-12 “Targeted Improvements to the Accounting for Long-Duration Contracts.” ASU 2018-12 requires periodic reassessment of actuarial and discount rate assumptions used to value policyholder liabilities and deferred acquisition costs arising from long-duration insurance and reinsurance contracts, with the effects of changes in cash flow assumptions reflected in earnings and the effects of changes in discount rate assumptions reflected in other comprehensive income. Currently, the actuarial and discount rate assumptions are set at the contract inception date and not subsequently changed, except under limited circumstances. ASU 2018-12 requires new disclosures and is effective for fiscal years beginning after December 15, 2021, with early adoption permitted. We are evaluating the effect this standard will have on our Consolidated Financial Statements.