New Accounting Standards	12 Months Ended
Dec. 31, 2017
Accounting Changes and Error Corrections [Abstract]
New Accounting Standards	New Accounting Standards: On February 25, 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ASU 2016-02, “Leases” (“ASU 2016-02”). ASU 2016-02 requires organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. Additionally, ASU 2016-02 modifies current guidance for lessors' accounting. ASU 2016-02 is effective for interim and annual reporting periods beginning on or after January 1, 2019, with early adoption permitted. PMI has identified its lease management system and is in the process of identifying and evaluating the applicable leases. PMI is currently assessing the impact that the adoption of ASU 2016-02 will have on its financial position and results of operations. On January 5, 2016, the FASB issued Accounting Standard Update ASU 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”). ASU 2016-01 will require equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. Additionally, ASU 2016-01 also changes certain disclosure requirements and other aspects of current U.S. GAAP. ASU 2016-01 is effective for interim and annual reporting periods beginning on or after January 1, 2018. PMI has identified certain cost investments which are applicable to ASU 2016-01. At January 1, 2018, the cumulative effect of this change to PMI’s Earnings Reinvested in the Business is an increase of $238 million, which is net of $63 million in taxes. On May 28, 2014, the FASB issued Accounting Standards Update ASU 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”). ASU 2014-09 contains principles that an entity will need to apply to determine the measurement of revenue and timing of when it is recognized. The underlying principle is that an entity will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 is effective for interim and annual reporting periods beginning on or after January 1, 2017. In July 2015, the FASB approved a proposal which allows for a deferral of the implementation until January 1, 2018, and permits early application, but not before the original effective date of January 1, 2017. In addition to the guidance in ASU 2014-09, PMI has evaluated ASU 2016-12, which was issued in May 2016 and provides some practical expedients to the original standard. As a result of this evaluation, PMI made an accounting policy election to exclude excise taxes collected from customers from the measurement of the transaction price, thereby presenting revenues, net of excise taxes. PMI has adopted ASU 2014-09 on January 1, 2018 retrospectively to each prior period presented. PMI has elected this transition method solely to reflect the change in excise tax presentation in all prior periods. Based on PMI’s assessment to date, the underlying principles of the new standard, relating to the measurement of revenue and the timing of recognition, are closely aligned with PMI’s current business model and practices. As a result, other than excise tax presentation, the adoption of ASU 2014-09 will not have any other material impact on the consolidated financial position or results of operations.

New Accounting Standards:

On February 25, 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ASU 2016-02, “Leases” (“ASU 2016-02”). ASU 2016-02 requires organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. Additionally, ASU 2016-02 modifies current guidance for lessors' accounting. ASU 2016-02 is effective for interim and annual reporting periods beginning on or after January 1, 2019, with early adoption permitted. PMI has identified its lease management system and is in the process of identifying and evaluating the applicable leases. PMI is currently assessing the impact that the adoption of ASU 2016-02 will have on its financial position and results of operations.

On January 5, 2016, the FASB issued Accounting Standard Update ASU 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”). ASU 2016-01 will require equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. Additionally, ASU 2016-01 also changes certain disclosure requirements and other aspects of current U.S. GAAP. ASU 2016-01 is effective for interim and annual reporting periods beginning on or after January 1, 2018. PMI has identified certain cost investments which are applicable to ASU 2016-01. At January 1, 2018, the cumulative effect of this change to PMI’s Earnings Reinvested in the Business is an increase of $238 million, which is net of $63 million in taxes.

On May 28, 2014, the FASB issued Accounting Standards Update ASU 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”). ASU 2014-09 contains principles that an entity will need to apply to determine the measurement of revenue and timing of when it is recognized. The underlying principle is that an entity will recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services.

ASU 2014-09 is effective for interim and annual reporting periods beginning on or after January 1, 2017. In July 2015, the FASB approved a proposal which allows for a deferral of the implementation until January 1, 2018, and permits early application, but not before the original effective date of January 1, 2017. In addition to the guidance in ASU 2014-09, PMI has evaluated ASU 2016-12, which was issued in May 2016 and provides some practical expedients to the original standard. As a result of this evaluation, PMI made an accounting policy election to exclude excise taxes collected from customers from the measurement of the transaction price, thereby presenting revenues, net of excise taxes. PMI has adopted ASU 2014-09 on January 1, 2018 retrospectively to each prior period presented. PMI has elected this transition method solely to reflect the change in excise tax presentation in all prior periods. Based on PMI’s assessment to date, the underlying principles of the new standard, relating to the measurement of revenue and the timing of recognition, are closely aligned with PMI’s current business model and practices. As a result, other than excise tax presentation, the adoption of ASU 2014-09 will not have any other material impact on the consolidated financial position or results of operations.