Condensed Consolidating Financial Information - Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Millions | Mar. 31, 2016 | Dec. 31, 2015 | Mar. 31, 2015 | Dec. 31, 2014 |
Current assets: | | | | |
Cash and cash equivalents | $ 37 | $ 58 | $ 324 | $ 337 |
Accounts receivable, net | 472 | 459 | | |
Accounts receivable from affiliates | 0 | 0 | | |
Inventories, net | 562 | 541 | | |
Note, advance and interest receivable from parent | 0 | 0 | | |
Notes and interest receivable from affiliates | 0 | 0 | | |
Other current assets | 50 | 53 | | |
Total current assets | 1,121 | 1,111 | | |
Fixed assets, net | 1,811 | 1,810 | | |
Amortizable intangible assets, net | 102 | 105 | | |
Goodwill | 60 | 59 | | |
Deferred income tax assets | 1,032 | 982 | | |
Notes receivable from parent | 0 | 0 | | |
Notes receivable from affiliates | 0 | 0 | | |
Investments in consolidated subsidiaries and affiliates | 0 | 0 | | |
Other assets | 163 | 153 | | |
Total assets | 4,289 | 4,220 | | |
Current liabilities: | | | | |
Accounts payable and accrued liabilities | 464 | 436 | | |
Current portion of long-term debt | 1 | 1 | | |
Accounts payable to affiliates | 0 | 0 | | |
Note, advance and interest payable to subsidiaries | 0 | 0 | | |
Notes and interest payable to affiliates | 0 | 0 | | |
Total current liabilities | 465 | 437 | | |
Long-term debt, net of current portion | 610 | 590 | | |
Notes payable to subsidiaries | 0 | 0 | | |
Notes payable to affiliates | 0 | 0 | | |
Pension and other postretirement benefit obligations | 1,211 | 1,186 | | |
Deferred income tax liabilities | 2 | 2 | | |
Other liabilities | 55 | 60 | | |
Total liabilities | 2,343 | 2,275 | | |
Total equity | 1,946 | 1,945 | 2,100 | 2,117 |
Total liabilities and equity | 4,289 | 4,220 | | |
Parent [Member] | | | | |
Current assets: | | | | |
Cash and cash equivalents | 0 | 0 | 0 | 0 |
Accounts receivable, net | 0 | 0 | | |
Accounts receivable from affiliates | 0 | 0 | | |
Inventories, net | 0 | 0 | | |
Note, advance and interest receivable from parent | 0 | 0 | | |
Notes and interest receivable from affiliates | 0 | 0 | | |
Other current assets | 0 | 0 | | |
Total current assets | 0 | 0 | | |
Fixed assets, net | 0 | 0 | | |
Amortizable intangible assets, net | 0 | 0 | | |
Goodwill | 0 | 0 | | |
Deferred income tax assets | 0 | 0 | | |
Notes receivable from parent | 0 | 0 | | |
Notes receivable from affiliates | 0 | 0 | | |
Investments in consolidated subsidiaries and affiliates | 4,087 | 4,067 | | |
Other assets | 0 | 0 | | |
Total assets | 4,087 | 4,067 | | |
Current liabilities: | | | | |
Accounts payable and accrued liabilities | 13 | 5 | | |
Current portion of long-term debt | 0 | 0 | | |
Accounts payable to affiliates | 435 | 433 | | |
Note, advance and interest payable to subsidiaries | 369 | 62 | | |
Notes and interest payable to affiliates | 0 | 0 | | |
Total current liabilities | 817 | 500 | | |
Long-term debt, net of current portion | 589 | 589 | | |
Notes payable to subsidiaries | 414 | 710 | | |
Notes payable to affiliates | 0 | 0 | | |
Pension and other postretirement benefit obligations | 0 | 0 | | |
Deferred income tax liabilities | 0 | 0 | | |
Other liabilities | 0 | 1 | | |
Total liabilities | 1,820 | 1,800 | | |
Total equity | 2,267 | 2,267 | | |
Total liabilities and equity | 4,087 | 4,067 | | |
Guarantor Subsidiaries [Member] | | | | |
Current assets: | | | | |
Cash and cash equivalents | 10 | 13 | 277 | 257 |
Accounts receivable, net | 326 | 322 | | |
Accounts receivable from affiliates | 424 | 421 | | |
Inventories, net | 256 | 257 | | |
Note, advance and interest receivable from parent | 369 | 62 | | |
Notes and interest receivable from affiliates | 47 | 48 | | |
Other current assets | 22 | 22 | | |
Total current assets | 1,454 | 1,145 | | |
Fixed assets, net | 648 | 629 | | |
Amortizable intangible assets, net | 44 | 46 | | |
Goodwill | 60 | 59 | | |
Deferred income tax assets | 0 | 0 | | |
Notes receivable from parent | 414 | 710 | | |
Notes receivable from affiliates | 112 | 105 | | |
Investments in consolidated subsidiaries and affiliates | 2,034 | 2,047 | | |
Other assets | 52 | 48 | | |
Total assets | 4,818 | 4,789 | | |
Current liabilities: | | | | |
Accounts payable and accrued liabilities | 207 | 189 | | |
Current portion of long-term debt | 1 | 1 | | |
Accounts payable to affiliates | 297 | 260 | | |
Note, advance and interest payable to subsidiaries | 0 | 0 | | |
Notes and interest payable to affiliates | 0 | 0 | | |
Total current liabilities | 505 | 450 | | |
Long-term debt, net of current portion | 21 | 1 | | |
Notes payable to subsidiaries | 0 | 0 | | |
Notes payable to affiliates | 0 | 0 | | |
Pension and other postretirement benefit obligations | 349 | 352 | | |
Deferred income tax liabilities | 0 | 0 | | |
Other liabilities | 23 | 24 | | |
Total liabilities | 898 | 827 | | |
Total equity | 3,920 | 3,962 | | |
Total liabilities and equity | 4,818 | 4,789 | | |
Non-Guarantor Subsidiaries [Member] | | | | |
Current assets: | | | | |
Cash and cash equivalents | 27 | 45 | 47 | 80 |
Accounts receivable, net | 146 | 137 | | |
Accounts receivable from affiliates | 308 | 272 | | |
Inventories, net | 311 | 290 | | |
Note, advance and interest receivable from parent | 0 | 0 | | |
Notes and interest receivable from affiliates | 0 | 0 | | |
Other current assets | 28 | 31 | | |
Total current assets | 820 | 775 | | |
Fixed assets, net | 1,163 | 1,181 | | |
Amortizable intangible assets, net | 58 | 59 | | |
Goodwill | 0 | 0 | | |
Deferred income tax assets | 1,031 | 981 | | |
Notes receivable from parent | 0 | 0 | | |
Notes receivable from affiliates | 0 | 0 | | |
Investments in consolidated subsidiaries and affiliates | 0 | 0 | | |
Other assets | 111 | 105 | | |
Total assets | 3,183 | 3,101 | | |
Current liabilities: | | | | |
Accounts payable and accrued liabilities | 244 | 242 | | |
Current portion of long-term debt | 0 | 0 | | |
Accounts payable to affiliates | 0 | 0 | | |
Note, advance and interest payable to subsidiaries | 0 | 0 | | |
Notes and interest payable to affiliates | 47 | 48 | | |
Total current liabilities | 291 | 290 | | |
Long-term debt, net of current portion | 0 | 0 | | |
Notes payable to subsidiaries | 0 | 0 | | |
Notes payable to affiliates | 112 | 105 | | |
Pension and other postretirement benefit obligations | 862 | 834 | | |
Deferred income tax liabilities | 2 | 2 | | |
Other liabilities | 32 | 35 | | |
Total liabilities | 1,299 | 1,266 | | |
Total equity | 1,884 | 1,835 | | |
Total liabilities and equity | 3,183 | 3,101 | | |
Consolidating Adjustments [Member] | | | | |
Current assets: | | | | |
Cash and cash equivalents | 0 | 0 | $ 0 | $ 0 |
Accounts receivable, net | 0 | 0 | | |
Accounts receivable from affiliates | (732) | (693) | | |
Inventories, net | (5) | (6) | | |
Note, advance and interest receivable from parent | (369) | (62) | | |
Notes and interest receivable from affiliates | (47) | (48) | | |
Other current assets | 0 | 0 | | |
Total current assets | (1,153) | (809) | | |
Fixed assets, net | 0 | 0 | | |
Amortizable intangible assets, net | 0 | 0 | | |
Goodwill | 0 | 0 | | |
Deferred income tax assets | 1 | 1 | | |
Notes receivable from parent | (414) | (710) | | |
Notes receivable from affiliates | (112) | (105) | | |
Investments in consolidated subsidiaries and affiliates | (6,121) | (6,114) | | |
Other assets | 0 | 0 | | |
Total assets | (7,799) | (7,737) | | |
Current liabilities: | | | | |
Accounts payable and accrued liabilities | 0 | 0 | | |
Current portion of long-term debt | 0 | 0 | | |
Accounts payable to affiliates | (732) | (693) | | |
Note, advance and interest payable to subsidiaries | (369) | (62) | | |
Notes and interest payable to affiliates | (47) | (48) | | |
Total current liabilities | (1,148) | (803) | | |
Long-term debt, net of current portion | 0 | 0 | | |
Notes payable to subsidiaries | (414) | (710) | | |
Notes payable to affiliates | (112) | (105) | | |
Pension and other postretirement benefit obligations | 0 | 0 | | |
Deferred income tax liabilities | 0 | 0 | | |
Other liabilities | 0 | 0 | | |
Total liabilities | (1,674) | (1,618) | | |
Total equity | (6,125) | (6,119) | | |
Total liabilities and equity | $ (7,799) | $ (7,737) | | |