Income Taxes	3 Months Ended
Mar. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rate for the three months ended March 31, 2014 and 2013 was 14.7% and 21.7%, respectively. The effective tax rate for 2014 includes a benefit of $6 million from the resolution of tax examinations and an incremental tax benefit associated with the early extinguishment of debt. The effective tax rate for 2013 includes tax benefits of $4 million from the retroactive effect of 2013 U.S. tax legislation. As is the case with other large corporations, our tax returns are examined each year by tax authorities in the U.S., other countries and local jurisdictions in which we have operations. Except for issues arising out of certain partnership investments, the IRS examinations of tax years prior to 2009 are closed to audit. Other than the pending application of legal principles to specific issues arising in earlier years, only post-2007 Canadian tax years are subject to examination. Other significant tax filings subject to examination include various post-2004 U.S. state and local, post-2007 German, and post-2011 French and U.K. tax filings. We have other less significant tax filings currently under examination or subject to examination. In August 2012, the United States Court of Appeals for the Third Circuit overturned a prior Tax Court decision and ruled in favor of the IRS and adverse to the Historic Boardwalk Hall LLC, a partnership in which we had made an investment in the year 2000. In January 2014, the Tax Court entered an order to implement rulings of the Third Circuit. Under the terms of the partnership agreement, we are indemnified against any payments we may be required to make. However, the potential for a difference in the timing of payments which may be due to taxing authorities, and the timing of receipts due to us under the partnership agreement, may cause fluctuations in our cash flows in future periods. Further, if we do not recover under the indemnification provisions of the partnership agreement, the amount of tax and interest due as a result of this matter could be as much as $100 million.

Income Taxes

3 Months Ended

Mar. 31, 2014

The effective tax rate for the three months ended March 31, 2014 and 2013 was 14.7% and 21.7%, respectively. The effective tax rate for 2014 includes a benefit of $6 million from the resolution of tax examinations and an incremental tax benefit associated with the early extinguishment of debt. The effective tax rate for 2013 includes tax benefits of $4 million from the retroactive effect of 2013 U.S. tax legislation.

As is the case with other large corporations, our tax returns are examined each year by tax authorities in the U.S., other countries and local jurisdictions in which we have operations. Except for issues arising out of certain partnership investments, the IRS examinations of tax years prior to 2009 are closed to audit. Other than the pending application of legal principles to specific issues arising in earlier years, only post-2007 Canadian tax years are subject to examination. Other significant tax filings subject to examination include various post-2004 U.S. state and local, post-2007 German, and post-2011 French and U.K. tax filings. We have other less significant tax filings currently under examination or subject to examination.

In August 2012, the United States Court of Appeals for the Third Circuit overturned a prior Tax Court decision and ruled in favor of the IRS and adverse to the Historic Boardwalk Hall LLC, a partnership in which we had made an investment in the year 2000. In January 2014, the Tax Court entered an order to implement rulings of the Third Circuit. Under the terms of the partnership agreement, we are indemnified against any payments we may be required to make. However, the potential for a difference in the timing of payments which may be due to taxing authorities, and the timing of receipts due to us under the partnership agreement, may cause fluctuations in our cash flows in future periods. Further, if we do not recover under the indemnification provisions of the partnership agreement, the amount of tax and interest due as a result of this matter could be as much as $100 million.