Shareholders' Equity and Comprehensive Earnings - AOCI Activity (Details) $ / shares in Units, $ in Millions		1 Months Ended	6 Months Ended
	May 16, 2017	Apr. 30, 2017 $ / shares	Jun. 30, 2017 USD ($)
Stock split
Stock split ratio	2
Percent increase to quarterly dividends		54.00%
Post-split dividend amount per share | $ / shares		$ 10
Accumulated Other Comprehensive Earnings (Loss)
Stockholders' Equity Attributable to Parent, Beginning Balance			$ 3,435
Stockholders' Equity Attributable to Parent, Ending Balance			3,604
Foreign Currency Translation
Accumulated Other Comprehensive Earnings (Loss)
Stockholders' Equity Attributable to Parent, Beginning Balance			(329)
Other comprehensive earnings (loss) before reclassifications			(3)
Stockholders' Equity Attributable to Parent, Ending Balance			(332)
Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Earnings (Loss)
Stockholders' Equity Attributable to Parent, Beginning Balance			(590)
Other comprehensive earnings (loss) before reclassifications			(23)
Amounts reclassified from accumulated other comprehensive earnings (loss)			11
Stockholders' Equity Attributable to Parent, Ending Balance			(602)
Effective Derivatives
Accumulated Other Comprehensive Earnings (Loss)
Stockholders' Equity Attributable to Parent, Beginning Balance			(22)
Other comprehensive earnings (loss) before reclassifications			(25)
Amounts reclassified from accumulated other comprehensive earnings (loss)			62
Stockholders' Equity Attributable to Parent, Ending Balance			15
Accumulated Other Comprehensive Earnings (Loss)
Accumulated Other Comprehensive Earnings (Loss)
Stockholders' Equity Attributable to Parent, Beginning Balance			(941)
Other comprehensive earnings (loss) before reclassifications			(51)
Amounts reclassified from accumulated other comprehensive earnings (loss)			73
Stockholders' Equity Attributable to Parent, Ending Balance			$ (919)