General (Policies)	6 Months Ended
Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
New Accounting Standards	New Accounting Standards—In May 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2017-09, Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting, which provided clarity on which changes to the terms or conditions of share-based payment awards require an entity to apply the modification accounting provisions required in Topic 718. The standard is effective for all entities for annual periods beginning after December 15, 2017, with early adoption permitted, including adoption in any interim period for which financial statements have not yet been issued. The Company does not expect the adoption of this ASU will have a material impact on its consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which requires employers to disaggregate the service cost component from other components of net periodic benefit costs and to disclose the amounts of net periodic benefit costs that are included in each income statement line item. The standard requires employers to report the service cost component in the same line item as other compensation costs and to report the other components of net periodic benefit costs (which include interest costs, expected return on plan assets, amortization of prior service cost or credits and actuarial gains and losses) separately and outside a subtotal of operating income. The income statement guidance requires application on a retrospective basis. The ASU is effective for public entities for annual periods beginning after December 15, 2017, including interim periods, with early adoption permitted. Management has not yet completed its assessment of the impact of the new standard on the Company’s consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which amends the impairment model by requiring entities to use a forward-looking approach based on expected losses to estimate credit losses on certain types of financial instruments, including trade receivables. The ASU is effective for public entities for fiscal years beginning after December 15, 2019, with early adoption permitted. Management has not yet completed its assessment of the impact of the new standard on the Company’s consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-09, Compensation—Stock Compensation (Topic 718), simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, classification of certain items on the statement of cash flows and accounting for forfeitures. The Company has adopted this standard effective January 1, 2017. The ASU requires that the difference between the actual tax benefit realized upon exercise or vesting, as applicable, and the tax benefit recorded based on the fair value of the stock award at the time of grant (the “excess tax benefits”) be reflected as a reduction of the current period provision for income taxes with any shortfall recorded as an increase in the tax provision rather than as a component of changes to additional paid-in capital. The ASU also requires the excess tax benefit realized be reflected as operating cash flow rather than a financing cash flow. For the three and six-month periods ended June 30, 2017, the provision for income taxes from continuing operations was reduced and operating cash flow from continuing operations was increased by $7 million and $33 million, respectively, reflecting the impact of adopting this standard. Had this ASU been adopted at January 1, 2016, the provision for income taxes from continuing operations would have been reduced and operating cash flow from continuing operations would have been increased by $12 million and $26 million from the amounts reported for the three and six-month periods ended July 1, 2016, respectively. The actual benefit to be realized in future periods is inherently uncertain and will vary based on the price of the Company’s common stock as well as the timing of and relative value realized for future share-based transactions. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which requires lessees to recognize a right-of-use asset and a lease liability for all leases with terms greater than 12 months. The standard also requires disclosures by lessees and lessors about the amount, timing and uncertainty of cash flows arising from leases. The accounting applied by a lessor is largely unchanged from that applied under the current standard. The standard must be adopted using a modified retrospective transition approach and provides for certain practical expedients. The ASU is effective for public entities for fiscal years beginning after December 15, 2018, with early adoption permitted. Management has not yet completed its assessment of the impact of the new standard on the Company’s consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes nearly all existing revenue recognition guidance. The core principle of Topic 606 is that revenue should be recognized 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. In July 2015, the FASB deferred the effective date of the standard by one year which results in the new standard being effective for the Company at the beginning of its first quarter of fiscal year 2018. In addition, during March, April, May and December 2016, the FASB issued ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients and ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, respectively, which clarified the guidance on certain items such as reporting revenue as a principal versus agent, identifying performance obligations, accounting for intellectual property licenses, assessing collectability, presentation of sales taxes, impairment testing for contract costs and disclosure of performance obligations. The Company plans to adopt the new standard on January 1, 2018 and expects the impact of the new standard on the amount and timing of revenue recognition to be insignificant. The new standard will require certain costs, primarily commissions on contracts greater than one year in duration, to be capitalized rather than expensed currently. The new standard will also require additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows from customer contracts, including judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. The Company expects to use the modified retrospective method of adoption, reflecting the cumulative effect of initially applying the new standard to revenue recognition in the first quarter of 2018.

New Accounting Standards—In May 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2017-09, Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting, which provided clarity on which changes to the terms or conditions of share-based payment awards require an entity to apply the modification accounting provisions required in Topic 718. The standard is effective for all entities for annual periods beginning after December 15, 2017, with early adoption permitted, including adoption in any interim period for which financial statements have not yet been issued. The Company does not expect the adoption of this ASU will have a material impact on its consolidated financial statements.

In March 2017, the FASB issued ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost, which requires employers to disaggregate the service cost component from other components of net periodic benefit costs and to disclose the amounts of net periodic benefit costs that are included in each income statement line item. The standard requires employers to report the service cost component in the same line item as other compensation costs and to report the other components of net periodic benefit costs (which include interest costs, expected return on plan assets, amortization of prior service cost or credits and actuarial gains and losses) separately and outside a subtotal of operating income. The income statement guidance requires application on a retrospective basis. The ASU is effective for public entities for annual periods beginning after December 15, 2017, including interim periods, with early adoption permitted. Management has not yet completed its assessment of the impact of the new standard on the Company’s consolidated financial statements.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which amends the impairment model by requiring entities to use a forward-looking approach based on expected losses to estimate credit losses on certain types of financial instruments, including trade receivables. The ASU is effective for public entities for fiscal years beginning after December 15, 2019, with early adoption permitted. Management has not yet completed its assessment of the impact of the new standard on the Company’s consolidated financial statements.

In March 2016, the FASB issued ASU No. 2016-09, Compensation—Stock Compensation (Topic 718), simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, classification of certain items on the statement of cash flows and accounting for forfeitures. The Company has adopted this standard effective January 1, 2017. The ASU requires that the difference between the actual tax benefit realized upon exercise or vesting, as applicable, and the tax benefit recorded based on the fair value of the stock award at the time of grant (the “excess tax benefits”) be reflected as a reduction of the current period provision for income taxes with any shortfall recorded as an increase in the tax provision rather than as a component of changes to additional paid-in capital. The ASU also requires the excess tax benefit realized be reflected as operating cash flow rather than a financing cash flow. For the three and six-month periods ended June 30, 2017, the provision for income taxes from continuing operations was reduced and operating cash flow from continuing operations was increased by $7 million and $33 million, respectively, reflecting the impact of adopting this standard. Had this ASU been adopted at January 1, 2016, the provision for income taxes from continuing operations would have been reduced and operating cash flow from continuing operations would have been increased by $12 million and $26 million from the amounts reported for the three and six-month periods ended July 1, 2016, respectively. The actual benefit to be realized in future periods is inherently uncertain and will vary based on the price of the Company’s common stock as well as the timing of and relative value realized for future share-based transactions.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which requires lessees to recognize a right-of-use asset and a lease liability for all leases with terms greater than 12 months. The standard also requires disclosures by lessees and lessors about the amount, timing and uncertainty of cash flows arising from leases. The accounting applied by a lessor is largely unchanged from that applied under the current standard. The standard must be adopted using a modified retrospective transition approach and provides for certain practical expedients. The ASU is effective for public entities for fiscal years beginning after December 15, 2018, with early adoption permitted. Management has not yet completed its assessment of the impact of the new standard on the Company’s consolidated financial statements.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes nearly all existing revenue recognition guidance. The core principle of Topic 606 is that revenue should be recognized 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. In July 2015, the FASB deferred the effective date of the standard by one year which results in the new standard being effective for the Company at the beginning of its first quarter of fiscal year 2018. In addition, during March, April, May and December 2016, the FASB issued ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients and ASU No. 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, respectively, which clarified the guidance on certain items such as reporting revenue as a principal versus agent, identifying performance obligations, accounting for intellectual property licenses, assessing collectability, presentation of sales taxes, impairment testing for contract costs and disclosure of performance obligations. The Company plans to adopt the new standard on January 1, 2018 and expects the impact of the new standard on the amount and timing of revenue recognition to be insignificant. The new standard will require certain costs, primarily commissions on contracts greater than one year in duration, to be capitalized rather than expensed currently. The new standard will also require additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows from customer contracts, including judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. The Company expects to use the modified retrospective method of adoption, reflecting the cumulative effect of initially applying the new standard to revenue recognition in the first quarter of 2018.